2121111100122 has 64 divisors (see below), whose sum is σ = 4884689608704. Its totient is φ = 601491870720.

The previous prime is 2121111100063. The next prime is 2121111100133. The reversal of 2121111100122 is 2210011111212.

It is a happy number.

It is a super-2 number, since 2×2121111100122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3190123 + ... + 3797249.

It is an arithmetic number, because the mean of its divisors is an integer number (76323275136).

Almost surely, 2^{2121111100122} is an apocalyptic number.

2121111100122 is an abundant number, since it is smaller than the sum of its proper divisors (2763578508582).

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

2121111100122 is a wasteful number, since it uses less digits than its factorization.

2121111100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607763.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121111100122 its reverse (2210011111212), we get a palindrome (4331122211334).

The spelling of 2121111100122 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred thousand, one hundred twenty-two".