210019911902 has 16 divisors (see below), whose sum is σ = 317334553200. Its totient is φ = 104241910080.

The previous prime is 210019911889. The next prime is 210019911911. The reversal of 210019911902 is 209119910012.

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, 2522474 + ... + 2604402.

It is an arithmetic number, because the mean of its divisors is an integer number (19833409575).

Almost surely, 2^210019911902 is an apocalyptic number.

210019911902 is a deficient number, since it is larger than the sum of its proper divisors (107314641298).

210019911902 is a wasteful number, since it uses less digits than its factorization.

210019911902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91291.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 210019911902 in words is "two hundred ten billion, nineteen million, nine hundred eleven thousand, nine hundred two".