2100020120102 has 16 divisors (see below), whose sum is σ = 3232554408720. Its totient is φ = 1022787041952.

The previous prime is 2100020120039. The next prime is 2100020120113. The reversal of 2100020120102 is 2010210200012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71249693 + ... + 71279160.

It is an arithmetic number, because the mean of its divisors is an integer number (202034650545).

Almost surely, 2^{2100020120102} is an apocalyptic number.

2100020120102 is a deficient number, since it is larger than the sum of its proper divisors (1132534288618).

2100020120102 is a wasteful number, since it uses less digits than its factorization.

2100020120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142529047.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2100020120102 its reverse (2010210200012), we get a palindrome (4110230320114).

The spelling of 2100020120102 in words is "two trillion, one hundred billion, twenty million, one hundred twenty thousand, one hundred two".