202120210102 has 16 divisors (see below), whose sum is σ = 311024501424. Its totient is φ = 98452512000.

The previous prime is 202120210079. The next prime is 202120210139. The reversal of 202120210102 is 201012021202.

It is a happy number.

It is a super-3 number, since 3×202120210102³ (a number of 35 digits) contains 333 as substring.

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, 1726899 + ... + 1840222.

It is an arithmetic number, because the mean of its divisors is an integer number (19439031339).

Almost surely, 2^202120210102 is an apocalyptic number.

202120210102 is a deficient number, since it is larger than the sum of its proper divisors (108904291322).

202120210102 is a wasteful number, since it uses less digits than its factorization.

202120210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567855.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202120210102 its reverse (201012021202), we get a palindrome (403132231304).

The spelling of 202120210102 in words is "two hundred two billion, one hundred twenty million, two hundred ten thousand, one hundred two".