101211220013 has 4 divisors (see below), whose sum is σ = 102926664480. Its totient is φ = 99495775548.

The previous prime is 101211220007. The next prime is 101211220039. The reversal of 101211220013 is 310022112101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101211220013 - 2²⁸ = 100942784557 is a prime.

It is a super-2 number, since 2×101211220013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101211220013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211220003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857722145 + ... + 857722262.

It is an arithmetic number, because the mean of its divisors is an integer number (25731666120).

Almost surely, 2^101211220013 is an apocalyptic number.

It is an amenable number.

101211220013 is a deficient number, since it is larger than the sum of its proper divisors (1715444467).

101211220013 is an equidigital number, since it uses as much as digits as its factorization.

101211220013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715444466.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 101211220013 its reverse (310022112101), we get a palindrome (411233332114).

The spelling of 101211220013 in words is "one hundred one billion, two hundred eleven million, two hundred twenty thousand, thirteen".