101064220421 has 2 divisors, whose sum is σ = 101064220422. Its totient is φ = 101064220420.

The previous prime is 101064220417. The next prime is 101064220441. The reversal of 101064220421 is 124022460101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83686389796 + 17377830625 = 289286^2 + 131825^2 .

It is a cyclic number.

It is not a de Polignac number, because 101064220421 - 2² = 101064220417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101064220441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50532110210 + 50532110211.

It is an arithmetic number, because the mean of its divisors is an integer number (50532110211).

Almost surely, 2^101064220421 is an apocalyptic number.

It is an amenable number.

101064220421 is a deficient number, since it is larger than the sum of its proper divisors (1).

101064220421 is an equidigital number, since it uses as much as digits as its factorization.

101064220421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 101064220421 its reverse (124022460101), we get a palindrome (225086680522).

The spelling of 101064220421 in words is "one hundred one billion, sixty-four million, two hundred twenty thousand, four hundred twenty-one".