113012101621 has 2 divisors, whose sum is σ = 113012101622. Its totient is φ = 113012101620.

The previous prime is 113012101487. The next prime is 113012101627. The reversal of 113012101621 is 126101210311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60966523396 + 52045578225 = 246914^2 + 228135^2 .

It is a cyclic number.

It is not a de Polignac number, because 113012101621 - 2¹⁹ = 113011577333 is a prime.

It is a super-2 number, since 2×113012101621² (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 (113012101627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56506050810 + 56506050811.

It is an arithmetic number, because the mean of its divisors is an integer number (56506050811).

Almost surely, 2^113012101621 is an apocalyptic number.

It is an amenable number.

113012101621 is a deficient number, since it is larger than the sum of its proper divisors (1).

113012101621 is an equidigital number, since it uses as much as digits as its factorization.

113012101621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 113012101621 its reverse (126101210311), we get a palindrome (239113311932).

The spelling of 113012101621 in words is "one hundred thirteen billion, twelve million, one hundred one thousand, six hundred twenty-one".