202021020120102 has 16 divisors (see below), whose sum is σ = 406461453656832. Its totient is φ = 66937104470600.

The previous prime is 202021020120083. The next prime is 202021020120113. The reversal of 202021020120102 is 201021020120202.

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, 100808891274 + ... + 100808893277.

It is an arithmetic number, because the mean of its divisors is an integer number (25403840853552).

Almost surely, 2^{202021020120102} is an apocalyptic number.

202021020120102 is an abundant number, since it is smaller than the sum of its proper divisors (204440433536730).

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

202021020120102 is a wasteful number, since it uses less digits than its factorization.

202021020120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201617784723.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202021020120102 its reverse (201021020120202), we get a palindrome (403042040240304).

The spelling of 202021020120102 in words is "two hundred two trillion, twenty-one billion, twenty million, one hundred twenty thousand, one hundred two".