1011020211988 has 24 divisors (see below), whose sum is σ = 1778075187840. Its totient is φ = 503002032960.

The previous prime is 1011020211973. The next prime is 1011020212003. The reversal of 1011020211988 is 8891120201101.

It is an interprime number because it is at equal distance from previous prime (1011020211973) and next prime (1011020212003).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814408 + ... + 1638688.

It is an arithmetic number, because the mean of its divisors is an integer number (74086466160).

Almost surely, 2^{1011020211988} is an apocalyptic number.

It is an amenable number.

1011020211988 is a deficient number, since it is larger than the sum of its proper divisors (767054975852).

1011020211988 is a wasteful number, since it uses less digits than its factorization.

1011020211988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825807 (or 825805 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 34.

The spelling of 1011020211988 in words is "one trillion, eleven billion, twenty million, two hundred eleven thousand, nine hundred eighty-eight".