3100221230021 has 2 divisors, whose sum is σ = 3100221230022. Its totient is φ = 3100221230020.

The previous prime is 3100221229997. The next prime is 3100221230077. The reversal of 3100221230021 is 1200321220013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2898540300100 + 201680929921 = 1702510^2 + 449089^2 .

It is a cyclic number.

It is not a de Polignac number, because 3100221230021 - 2⁶ = 3100221229957 is a prime.

It is a super-2 number, since 2×3100221230021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3100221230081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550110615010 + 1550110615011.

It is an arithmetic number, because the mean of its divisors is an integer number (1550110615011).

Almost surely, 2^{3100221230021} is an apocalyptic number.

It is an amenable number.

3100221230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3100221230021 is an equidigital number, since it uses as much as digits as its factorization.

3100221230021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 3100221230021 its reverse (1200321220013), we get a palindrome (4300542450034).

The spelling of 3100221230021 in words is "three trillion, one hundred billion, two hundred twenty-one million, two hundred thirty thousand, twenty-one".