22061426566421 has 16 divisors (see below), whose sum is σ = 24241499520000. Its totient is φ = 19910451078000.

The previous prime is 22061426566409. The next prime is 22061426566457. The reversal of 22061426566421 is 12466562416022.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22061426566421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22061426566471) 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, 27820580 + ... + 28602578.

It is an arithmetic number, because the mean of its divisors is an integer number (1515093720000).

Almost surely, 2^{22061426566421} is an apocalyptic number.

It is an amenable number.

22061426566421 is a deficient number, since it is larger than the sum of its proper divisors (2180072953579).

22061426566421 is a wasteful number, since it uses less digits than its factorization.

22061426566421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800600.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 22061426566421 in words is "twenty-two trillion, sixty-one billion, four hundred twenty-six million, five hundred sixty-six thousand, four hundred twenty-one".