21216352063114 has 32 divisors (see below), whose sum is σ = 34832359726416. Its totient is φ = 9633457267200.

The previous prime is 21216352063091. The next prime is 21216352063157. The reversal of 21216352063114 is 41136025361212.

It can be written as a sum of positive squares in 8 ways, for example, as 3007910954889 + 18208441108225 = 1734333^2 + 4267135^2 .

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, 25318107 + ... + 26142670.

Almost surely, 2^{21216352063114} is an apocalyptic number.

21216352063114 is a deficient number, since it is larger than the sum of its proper divisors (13616007663302).

21216352063114 is a wasteful number, since it uses less digits than its factorization.

21216352063114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51461050.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 21216352063114 in words is "twenty-one trillion, two hundred sixteen billion, three hundred fifty-two million, sixty-three thousand, one hundred fourteen".