100222012121 has 16 divisors (see below), whose sum is σ = 125219727360. Its totient is φ = 77927819280.

The previous prime is 100222012031. The next prime is 100222012129. The reversal of 100222012121 is 121210222001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100222012121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100222012096 and 100222012105.

It is not an unprimeable number, because it can be changed into a prime (100222012129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357601 + ... + 1429518.

It is an arithmetic number, because the mean of its divisors is an integer number (7826232960).

Almost surely, 2^100222012121 is an apocalyptic number.

100222012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100222012121 is a deficient number, since it is larger than the sum of its proper divisors (24997715239).

100222012121 is a wasteful number, since it uses less digits than its factorization.

100222012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787604.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100222012121 its reverse (121210222001), we get a palindrome (221432234122).

The spelling of 100222012121 in words is "one hundred billion, two hundred twenty-two million, twelve thousand, one hundred twenty-one".