12220002100987 has 4 divisors (see below), whose sum is σ = 12221611909936. Its totient is φ = 12218392292040.

The previous prime is 12220002100963. The next prime is 12220002101003. The reversal of 12220002100987 is 78900120002221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220002100987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220002104987) 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, 804893088 + ... + 804908269.

It is an arithmetic number, because the mean of its divisors is an integer number (3055402977484).

Almost surely, 2^{12220002100987} is an apocalyptic number.

12220002100987 is a deficient number, since it is larger than the sum of its proper divisors (1609808949).

12220002100987 is an equidigital number, since it uses as much as digits as its factorization.

12220002100987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609808948.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 12220002100987 in words is "twelve trillion, two hundred twenty billion, two million, one hundred thousand, nine hundred eighty-seven".