101112100111221 has 32 divisors (see below), whose sum is σ = 136658916605952. Its totient is φ = 66493128387840.

The previous prime is 101112100111193. The next prime is 101112100111223. The reversal of 101112100111221 is 122111001211101.

It is not a de Polignac number, because 101112100111221 - 2¹³ = 101112100103029 is a prime.

It is a super-2 number, since 2×101112100111221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101112100111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101112100111223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59273536 + ... + 60955526.

It is an arithmetic number, because the mean of its divisors is an integer number (4270591143936).

Almost surely, 2^{101112100111221} is an apocalyptic number.

It is an amenable number.

101112100111221 is a deficient number, since it is larger than the sum of its proper divisors (35546816494731).

101112100111221 is a wasteful number, since it uses less digits than its factorization.

101112100111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682953.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101112100111221 its reverse (122111001211101), we get a palindrome (223223101322322).

The spelling of 101112100111221 in words is "one hundred one trillion, one hundred twelve billion, one hundred million, one hundred eleven thousand, two hundred twenty-one".