22212001987 has 24 divisors (see below), whose sum is σ = 26747163360. Its totient is φ = 18370154880.

The previous prime is 22212001961. The next prime is 22212001993. The reversal of 22212001987 is 78910021222.

It is a de Polignac number, because none of the positive numbers 2^k-22212001987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212001907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2597583 + ... + 2606119.

It is an arithmetic number, because the mean of its divisors is an integer number (1114465140).

Almost surely, 2^22212001987 is an apocalyptic number.

22212001987 is a deficient number, since it is larger than the sum of its proper divisors (4535161373).

22212001987 is a wasteful number, since it uses less digits than its factorization.

22212001987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10411 (or 10404 counting only the distinct ones).

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

The spelling of 22212001987 in words is "twenty-two billion, two hundred twelve million, one thousand, nine hundred eighty-seven".