1220131121986 has 64 divisors (see below), whose sum is σ = 2157785505792. Its totient is φ = 506613045312.

The previous prime is 1220131121983. The next prime is 1220131122011. The reversal of 1220131121986 is 6891211310221.

It is not an unprimeable number, because it can be changed into a prime (1220131121983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102293955 + ... + 102305881.

It is an arithmetic number, because the mean of its divisors is an integer number (33715398528).

Almost surely, 2^{1220131121986} is an apocalyptic number.

1220131121986 is a deficient number, since it is larger than the sum of its proper divisors (937654383806).

1220131121986 is a wasteful number, since it uses less digits than its factorization.

1220131121986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13543.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 1220131121986 in words is "one trillion, two hundred twenty billion, one hundred thirty-one million, one hundred twenty-one thousand, nine hundred eighty-six".