101220311113 has 4 divisors (see below), whose sum is σ = 101270199940. Its totient is φ = 101170422288.

The previous prime is 101220311111. The next prime is 101220311173. The reversal of 101220311113 is 311113022101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85070222224 + 16150088889 = 291668^2 + 127083^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220311113 - 2¹ = 101220311111 is a prime.

It is a super-2 number, since 2×101220311113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220311111) 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, 24941370 + ... + 24945427.

It is an arithmetic number, because the mean of its divisors is an integer number (25317549985).

Almost surely, 2^101220311113 is an apocalyptic number.

It is an amenable number.

101220311113 is a deficient number, since it is larger than the sum of its proper divisors (49888827).

101220311113 is an equidigital number, since it uses as much as digits as its factorization.

101220311113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49888826.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 101220311113 its reverse (311113022101), we get a palindrome (412333333214).

The spelling of 101220311113 in words is "one hundred one billion, two hundred twenty million, three hundred eleven thousand, one hundred thirteen".