102021111113 has 4 divisors (see below), whose sum is σ = 102555253248. Its totient is φ = 101486968980.

The previous prime is 102021111029. The next prime is 102021111139. The reversal of 102021111113 is 311111120201.

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 102021111113 - 2¹⁰ = 102021110089 is a prime.

It is a super-2 number, since 2×102021111113² (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 (102021111163) 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, 267070781 + ... + 267071162.

It is an arithmetic number, because the mean of its divisors is an integer number (25638813312).

Almost surely, 2^102021111113 is an apocalyptic number.

It is an amenable number.

102021111113 is a deficient number, since it is larger than the sum of its proper divisors (534142135).

102021111113 is an equidigital number, since it uses as much as digits as its factorization.

102021111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534142134.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 102021111113 its reverse (311111120201), we get a palindrome (413132231314).

The spelling of 102021111113 in words is "one hundred two billion, twenty-one million, one hundred eleven thousand, one hundred thirteen".