211020120102 has 32 divisors (see below), whose sum is σ = 460506942720. Its totient is φ = 63931684320.

The previous prime is 211020120053. The next prime is 211020120127. The reversal of 211020120102 is 201021020112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35077 + ... + 650592.

It is an arithmetic number, because the mean of its divisors is an integer number (14390841960).

Almost surely, 2^211020120102 is an apocalyptic number.

211020120102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211020120102 is an abundant number, since it is smaller than the sum of its proper divisors (249486822618).

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

211020120102 is a wasteful number, since it uses less digits than its factorization.

211020120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690348.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211020120102 its reverse (201021020112), we get a palindrome (412041140214).

The spelling of 211020120102 in words is "two hundred eleven billion, twenty million, one hundred twenty thousand, one hundred two".