1011222201986 has 24 divisors (see below), whose sum is σ = 1556856423732. Its totient is φ = 492604963200.

The previous prime is 1011222201931. The next prime is 1011222202033. The reversal of 1011222201986 is 6891022221101.

It can be written as a sum of positive squares in 6 ways, for example, as 140835828961 + 870386373025 = 375281^2 + 932945^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2259176 + ... + 2669516.

Almost surely, 2^{1011222201986} is an apocalyptic number.

1011222201986 is a deficient number, since it is larger than the sum of its proper divisors (545634221746).

1011222201986 is an equidigital number, since it uses as much as digits as its factorization.

1011222201986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411158 (or 411117 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 1011222201986 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred one thousand, nine hundred eighty-six".