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101233112221 = 142371140627
BaseRepresentation
bin101111001000111110…
…1101011010010011101
3100200022002221221012201
41132101331223102131
53124311134042341
6114301132531501
710212436153603
oct1362175532235
9320262857181
10101233112221
1139a294a860a
1217752920b91
139714128647
144c84b2d873
152977616331
hex1791f6b49d

101233112221 has 4 divisors (see below), whose sum is σ = 101304254272. Its totient is φ = 101161970172.

The previous prime is 101233112179. The next prime is 101233112243. The reversal of 101233112221 is 122211332101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101233112221 - 27 = 101233112093 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 (101233112251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35568891 + ... + 35571736.

It is an arithmetic number, because the mean of its divisors is an integer number (25326063568).

Almost surely, 2101233112221 is an apocalyptic number.

It is an amenable number.

101233112221 is a deficient number, since it is larger than the sum of its proper divisors (71142051).

101233112221 is an equidigital number, since it uses as much as digits as its factorization.

101233112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71142050.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101233112221 its reverse (122211332101), we get a palindrome (223444444322).

The spelling of 101233112221 in words is "one hundred one billion, two hundred thirty-three million, one hundred twelve thousand, two hundred twenty-one".

Divisors: 1 1423 71140627 101233112221