210010021988 has 72 divisors (see below), whose sum is σ = 419117580000. Its totient is φ = 91780356096.

The previous prime is 210010021979. The next prime is 210010021993. The reversal of 210010021988 is 889120010012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44938820 + ... + 44943492.

It is an arithmetic number, because the mean of its divisors is an integer number (5821077500).

Almost surely, 2^210010021988 is an apocalyptic number.

It is an amenable number.

210010021988 is a deficient number, since it is larger than the sum of its proper divisors (209107558012).

210010021988 is a wasteful number, since it uses less digits than its factorization.

210010021988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221 (or 8206 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 210010021988 in words is "two hundred ten billion, ten million, twenty-one thousand, nine hundred eighty-eight".