221023414003261 has 2 divisors, whose sum is σ = 221023414003262. Its totient is φ = 221023414003260.

The previous prime is 221023414003211. The next prime is 221023414003309. The reversal of 221023414003261 is 162300414320122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203281838197636 + 17741575805625 = 14257694^2 + 4212075^2 .

It is a cyclic number.

It is not a de Polignac number, because 221023414003261 - 2⁹ = 221023414002749 is a prime.

It is a super-2 number, since 2×221023414003261² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221023414003211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511707001630 + 110511707001631.

It is an arithmetic number, because the mean of its divisors is an integer number (110511707001631).

Almost surely, 2^{221023414003261} is an apocalyptic number.

It is an amenable number.

221023414003261 is a deficient number, since it is larger than the sum of its proper divisors (1).

221023414003261 is an equidigital number, since it uses as much as digits as its factorization.

221023414003261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 221023414003261 its reverse (162300414320122), we get a palindrome (383323828323383).

The spelling of 221023414003261 in words is "two hundred twenty-one trillion, twenty-three billion, four hundred fourteen million, three thousand, two hundred sixty-one".