10201031930021 has 2 divisors, whose sum is σ = 10201031930022. Its totient is φ = 10201031930020.

The previous prime is 10201031930017. The next prime is 10201031930041. The reversal of 10201031930021 is 12003913010201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9333721552996 + 867310377025 = 3055114^2 + 931295^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201031930021 - 2² = 10201031930017 is a prime.

It is a super-2 number, since 2×10201031930021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10201031930041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100515965010 + 5100515965011.

It is an arithmetic number, because the mean of its divisors is an integer number (5100515965011).

Almost surely, 2^{10201031930021} is an apocalyptic number.

It is an amenable number.

10201031930021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201031930021 is an equidigital number, since it uses as much as digits as its factorization.

10201031930021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 10201031930021 its reverse (12003913010201), we get a palindrome (22204944940222).

The spelling of 10201031930021 in words is "ten trillion, two hundred one billion, thirty-one million, nine hundred thirty thousand, twenty-one".