202120202102102 has 16 divisors (see below), whose sum is σ = 303531235297632. Its totient is φ = 100943130524160.

The previous prime is 202120202102099. The next prime is 202120202102107. The reversal of 202120202102102 is 201201202021202.

It is a happy number.

It is a super-3 number, since 3×202120202102102³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120202102107) 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, 57876278 + ... + 61269110.

It is an arithmetic number, because the mean of its divisors is an integer number (18970702206102).

Almost surely, 2^{202120202102102} is an apocalyptic number.

202120202102102 is a deficient number, since it is larger than the sum of its proper divisors (101411033195530).

202120202102102 is a wasteful number, since it uses less digits than its factorization.

202120202102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427303.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202120202102102 its reverse (201201202021202), we get a palindrome (403321404123304).

The spelling of 202120202102102 in words is "two hundred two trillion, one hundred twenty billion, two hundred two million, one hundred two thousand, one hundred two".