1121020021986 has 16 divisors (see below), whose sum is σ = 2242094403744. Its totient is φ = 373664280704.

The previous prime is 1121020021831. The next prime is 1121020021987. The reversal of 1121020021986 is 6891200201211.

It is not an unprimeable number, because it can be changed into a prime (1121020021987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1994415 + ... + 2493938.

It is an arithmetic number, because the mean of its divisors is an integer number (140130900234).

Almost surely, 2^{1121020021986} is an apocalyptic number.

1121020021986 is an abundant number, since it is smaller than the sum of its proper divisors (1121074381758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121020021986 is a wasteful number, since it uses less digits than its factorization.

1121020021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529985.

The product of its (nonzero) digits is 3456, while the sum is 33.

The spelling of 1121020021986 in words is "one trillion, one hundred twenty-one billion, twenty million, twenty-one thousand, nine hundred eighty-six".