22405100204261 has 2 divisors, whose sum is σ = 22405100204262. Its totient is φ = 22405100204260.

The previous prime is 22405100204257. The next prime is 22405100204303. The reversal of 22405100204261 is 16240200150422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19075318300900 + 3329781903361 = 4367530^2 + 1824769^2 .

It is a cyclic number.

It is not a de Polignac number, because 22405100204261 - 2² = 22405100204257 is a prime.

It is a super-2 number, since 2×22405100204261² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22405100201261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202550102130 + 11202550102131.

It is an arithmetic number, because the mean of its divisors is an integer number (11202550102131).

Almost surely, 2^{22405100204261} is an apocalyptic number.

It is an amenable number.

22405100204261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22405100204261 is an equidigital number, since it uses as much as digits as its factorization.

22405100204261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 22405100204261 its reverse (16240200150422), we get a palindrome (38645300354683).

The spelling of 22405100204261 in words is "twenty-two trillion, four hundred five billion, one hundred million, two hundred four thousand, two hundred sixty-one".