1220111220986 has 16 divisors (see below), whose sum is σ = 2091868825536. Its totient is φ = 522842411616.

The previous prime is 1220111220961. The next prime is 1220111220989. The reversal of 1220111220986 is 6890221110221.

It is not an unprimeable number, because it can be changed into a prime (1220111220989) 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, 5078171 + ... + 5313006.

It is an arithmetic number, because the mean of its divisors is an integer number (130741801596).

Almost surely, 2^{1220111220986} is an apocalyptic number.

1220111220986 is a deficient number, since it is larger than the sum of its proper divisors (871757604550).

1220111220986 is a wasteful number, since it uses less digits than its factorization.

1220111220986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10399573.

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

The spelling of 1220111220986 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, nine hundred eighty-six".