101220313213 has 2 divisors, whose sum is σ = 101220313214. Its totient is φ = 101220313212.

The previous prime is 101220313171. The next prime is 101220313223. The reversal of 101220313213 is 312313022101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95186441529 + 6033871684 = 308523^2 + 77678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101220313213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220313223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610156606 + 50610156607.

It is an arithmetic number, because the mean of its divisors is an integer number (50610156607).

Almost surely, 2^101220313213 is an apocalyptic number.

It is an amenable number.

101220313213 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220313213 is an equidigital number, since it uses as much as digits as its factorization.

101220313213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 101220313213 its reverse (312313022101), we get a palindrome (413533335314).

The spelling of 101220313213 in words is "one hundred one billion, two hundred twenty million, three hundred thirteen thousand, two hundred thirteen".