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10122001111 = 101920694801
BaseRepresentation
bin10010110110101000…
…10111101011010111
3222010102022221012001
421123110113223113
5131212213013421
64352221340131
7505555406215
oct113324275327
928112287161
1010122001111
114324673282
121b65a07647
13c54065191
146c043dcb5
153e395b691
hex25b517ad7

10122001111 has 8 divisors (see below), whose sum is σ = 10138942800. Its totient is φ = 10105075200.

The previous prime is 10122001079. The next prime is 10122001159. The reversal of 10122001111 is 11110022101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10122001111 - 25 = 10122001079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122001181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2105911 + ... + 2110711.

It is an arithmetic number, because the mean of its divisors is an integer number (1267367850).

Almost surely, 210122001111 is an apocalyptic number.

10122001111 is a deficient number, since it is larger than the sum of its proper divisors (16941689).

10122001111 is a wasteful number, since it uses less digits than its factorization.

10122001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10122001111 its reverse (11110022101), we get a palindrome (21232023212).

The spelling of 10122001111 in words is "ten billion, one hundred twenty-two million, one thousand, one hundred eleven".

Divisors: 1 1019 2069 4801 2108311 4892219 9933269 10122001111