21163132022216 has 64 divisors (see below), whose sum is σ = 42246593832960. Its totient is φ = 9923116320000.

The previous prime is 21163132022209. The next prime is 21163132022239. The reversal of 21163132022216 is 61222023136112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7811075 + ... + 10165586.

It is an arithmetic number, because the mean of its divisors is an integer number (660103028640).

Almost surely, 2^{21163132022216} is an apocalyptic number.

It is an amenable number.

21163132022216 is a deficient number, since it is larger than the sum of its proper divisors (21083461810744).

21163132022216 is a wasteful number, since it uses less digits than its factorization.

21163132022216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17976846 (or 17976842 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 21163132022216 its reverse (61222023136112), we get a palindrome (82385155158328).

The spelling of 21163132022216 in words is "twenty-one trillion, one hundred sixty-three billion, one hundred thirty-two million, twenty-two thousand, two hundred sixteen".