221292086453 has 2 divisors, whose sum is σ = 221292086454. Its totient is φ = 221292086452.

The previous prime is 221292086441. The next prime is 221292086459. The reversal of 221292086453 is 354680292122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127436862289 + 93855224164 = 356983^2 + 306358^2 .

It is a cyclic number.

It is not a de Polignac number, because 221292086453 - 2²² = 221287892149 is a prime.

It is a super-2 number, since 2×221292086453² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221292086459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110646043226 + 110646043227.

It is an arithmetic number, because the mean of its divisors is an integer number (110646043227).

Almost surely, 2^221292086453 is an apocalyptic number.

It is an amenable number.

221292086453 is a deficient number, since it is larger than the sum of its proper divisors (1).

221292086453 is an equidigital number, since it uses as much as digits as its factorization.

221292086453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 221292086453 in words is "two hundred twenty-one billion, two hundred ninety-two million, eighty-six thousand, four hundred fifty-three".