22021616542451 has 16 divisors (see below), whose sum is σ = 22266743028480. Its totient is φ = 21777030844800.

The previous prime is 22021616542447. The next prime is 22021616542537. The reversal of 22021616542451 is 15424561612022.

It is a cyclic number.

It is not a de Polignac number, because 22021616542451 - 2² = 22021616542447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021616542399 and 22021616542408.

It is not an unprimeable number, because it can be changed into a prime (22021616542411) 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, 527329310 + ... + 527371068.

It is an arithmetic number, because the mean of its divisors is an integer number (1391671439280).

Almost surely, 2^{22021616542451} is an apocalyptic number.

22021616542451 is a deficient number, since it is larger than the sum of its proper divisors (245126486029).

22021616542451 is a wasteful number, since it uses less digits than its factorization.

22021616542451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48094.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 22021616542451 in words is "twenty-two trillion, twenty-one billion, six hundred sixteen million, five hundred forty-two thousand, four hundred fifty-one".