101221111210122 has 12 divisors (see below), whose sum is σ = 219312407621970. Its totient is φ = 33740370403368.

The previous prime is 101221111210111. The next prime is 101221111210207. The reversal of 101221111210122 is 221012111122101.

It is a happy number.

101221111210122 is a `hidden beast` number, since 1 + 0 + 1 + 221 + 111 + 210 + 122 = 666.

It can be written as a sum of positive squares in only one way, i.e., 65338267737681 + 35882843472441 = 8083209^2 + 5990229^2 .

It is a super-2 number, since 2×101221111210122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5623395067229 = 101221111210122 / (1 + 0 + 1 + 2 + 2 + 1 + 1 + 1 + 1 + 2 + 1 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 101221111210095 and 101221111210104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2811697533597 + ... + 2811697533632.

Almost surely, 2^{101221111210122} is an apocalyptic number.

101221111210122 is an abundant number, since it is smaller than the sum of its proper divisors (118091296411848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101221111210122 is a wasteful number, since it uses less digits than its factorization.

101221111210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623395067237 (or 5623395067234 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 101221111210122 its reverse (221012111122101), we get a palindrome (322233222332223).

The spelling of 101221111210122 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, one hundred twenty-two".