2212471987 has 16 divisors (see below), whose sum is σ = 2586390912. Its totient is φ = 1870203520.

The previous prime is 2212471957. The next prime is 2212472011. The reversal of 2212471987 is 7891742122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212471987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212471907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55753 + ... + 86794.

It is an arithmetic number, because the mean of its divisors is an integer number (161649432).

Almost surely, 2^2212471987 is an apocalyptic number.

2212471987 is a deficient number, since it is larger than the sum of its proper divisors (373918925).

2212471987 is a wasteful number, since it uses less digits than its factorization.

2212471987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142658.

The product of its digits is 112896, while the sum is 43.

The square root of 2212471987 is about 47036.9215297940. The cubic root of 2212471987 is about 1303.0445382344.

The spelling of 2212471987 in words is "two billion, two hundred twelve million, four hundred seventy-one thousand, nine hundred eighty-seven".