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31222200012101 = 7222927071027883
BaseRepresentation
bin1110001100101011111000…
…01001000000110101000101
311002112210221210122022221222
413012111330021000311011
513043021031200341401
6150223140343050125
76401505136155500
oct706257411006505
9132483853568858
1031222200012101
119a48295a4488a
1236030a3740945
131456319138897
1479d23c03c137
15392263950c1b
hex1c657c240d45

31222200012101 has 24 divisors (see below), whose sum is σ = 36491814421920. Its totient is φ = 26635152674592.

The previous prime is 31222200012097. The next prime is 31222200012139. The reversal of 31222200012101 is 10121000222213.

It is not a de Polignac number, because 31222200012101 - 22 = 31222200012097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31222200012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222200012191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29861306 + ... + 30889188.

It is an arithmetic number, because the mean of its divisors is an integer number (1520492267580).

Almost surely, 231222200012101 is an apocalyptic number.

It is an amenable number.

31222200012101 is a deficient number, since it is larger than the sum of its proper divisors (5269614409819).

31222200012101 is a wasteful number, since it uses less digits than its factorization.

31222200012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030833 (or 1030826 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31222200012101 its reverse (10121000222213), we get a palindrome (41343200234314).

The spelling of 31222200012101 in words is "thirty-one trillion, two hundred twenty-two billion, two hundred million, twelve thousand, one hundred one".

Divisors: 1 7 49 229 1603 2707 11221 18949 132643 619903 1027883 4339321 7195181 30375247 50366267 235385207 1647696449 2782479281 11533875143 19477354967 136341484769 637187755349 4460314287443 31222200012101