102021220112011 has 4 divisors (see below), whose sum is σ = 108022468353912. Its totient is φ = 96019971870112.

The previous prime is 102021220111931. The next prime is 102021220112039. The reversal of 102021220112011 is 110211022120201.

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

It is a cyclic number.

It is not a de Polignac number, because 102021220112011 - 2¹⁹ = 102021219587723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021220152011) 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, 3000624120925 + ... + 3000624120958.

It is an arithmetic number, because the mean of its divisors is an integer number (27005617088478).

Almost surely, 2^{102021220112011} is an apocalyptic number.

102021220112011 is a deficient number, since it is larger than the sum of its proper divisors (6001248241901).

102021220112011 is an equidigital number, since it uses as much as digits as its factorization.

102021220112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001248241900.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102021220112011 its reverse (110211022120201), we get a palindrome (212232242232212).

The spelling of 102021220112011 in words is "one hundred two trillion, twenty-one billion, two hundred twenty million, one hundred twelve thousand, eleven".