2101122121102 has 16 divisors (see below), whose sum is σ = 3164716324224. Its totient is φ = 1046222875000.

The previous prime is 2101122121099. The next prime is 2101122121103. The reversal of 2101122121102 is 2011212211012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101122121103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869524 + ... + 2226727.

It is an arithmetic number, because the mean of its divisors is an integer number (197794770264).

Almost surely, 2^{2101122121102} is an apocalyptic number.

2101122121102 is a deficient number, since it is larger than the sum of its proper divisors (1063594203122).

2101122121102 is a wasteful number, since it uses less digits than its factorization.

2101122121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097655.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2101122121102 its reverse (2011212211012), we get a palindrome (4112334332114).

The spelling of 2101122121102 in words is "two trillion, one hundred one billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred two".