2121101110102 has 16 divisors (see below), whose sum is σ = 3426439911552. Its totient is φ = 978956654400.

The previous prime is 2121101110019. The next prime is 2121101110109. The reversal of 2121101110102 is 2010111011212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121101110109) 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, 1595227 + ... + 2605177.

It is an arithmetic number, because the mean of its divisors is an integer number (214152494472).

Almost surely, 2^{2121101110102} is an apocalyptic number.

2121101110102 is a deficient number, since it is larger than the sum of its proper divisors (1305338801450).

2121101110102 is a wasteful number, since it uses less digits than its factorization.

2121101110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090743.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2121101110102 its reverse (2010111011212), we get a palindrome (4131212121314).

The spelling of 2121101110102 in words is "two trillion, one hundred twenty-one billion, one hundred one million, one hundred ten thousand, one hundred two".