1020211988 has 12 divisors (see below), whose sum is σ = 1786223712. Its totient is φ = 509862360.

The previous prime is 1020211961. The next prime is 1020211991. The reversal of 1020211988 is 8891120201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51320 + ... + 68367.

It is an arithmetic number, because the mean of its divisors is an integer number (148851976).

Almost surely, 2^1020211988 is an apocalyptic number.

It is an amenable number.

1020211988 is a deficient number, since it is larger than the sum of its proper divisors (766011724).

1020211988 is a wasteful number, since it uses less digits than its factorization.

1020211988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121822 (or 121820 counting only the distinct ones).

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

The square root of 1020211988 is about 31940.7574737983. The cubic root of 1020211988 is about 1006.6924406560.

The spelling of 1020211988 in words is "one billion, twenty million, two hundred eleven thousand, nine hundred eighty-eight".