22601877421 has 2 divisors, whose sum is σ = 22601877422. Its totient is φ = 22601877420.

The previous prime is 22601877413. The next prime is 22601877427. The reversal of 22601877421 is 12477810622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22601814921 + 62500 = 150339^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 22601877421 - 2³ = 22601877413 is a prime.

It is a super-2 number, since 2×22601877421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22601877427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11300938710 + 11300938711.

It is an arithmetic number, because the mean of its divisors is an integer number (11300938711).

Almost surely, 2^22601877421 is an apocalyptic number.

It is an amenable number.

22601877421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22601877421 is an equidigital number, since it uses as much as digits as its factorization.

22601877421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 22601877421 in words is "twenty-two billion, six hundred one million, eight hundred seventy-seven thousand, four hundred twenty-one".