12220001011987 has 4 divisors (see below), whose sum is σ = 12220420439176. Its totient is φ = 12219581584800.

The previous prime is 12220001011969. The next prime is 12220001012003. The reversal of 12220001011987 is 78911010002221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12220001011987 - 2³¹ = 12217853528339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220001011187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209669889 + ... + 209728162.

It is an arithmetic number, because the mean of its divisors is an integer number (3055105109794).

Almost surely, 2^{12220001011987} is an apocalyptic number.

12220001011987 is a deficient number, since it is larger than the sum of its proper divisors (419427189).

12220001011987 is an equidigital number, since it uses as much as digits as its factorization.

12220001011987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419427188.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 12220001011987 in words is "twelve trillion, two hundred twenty billion, one million, eleven thousand, nine hundred eighty-seven".