102013311021 has 32 divisors (see below), whose sum is σ = 138963272448. Its totient is φ = 66548528640.

The previous prime is 102013310999. The next prime is 102013311047. The reversal of 102013311021 is 120113310201.

It is a happy number.

It is not a de Polignac number, because 102013311021 - 2²¹ = 102011213869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102013315021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38979705 + ... + 38982321.

It is an arithmetic number, because the mean of its divisors is an integer number (4342602264).

Almost surely, 2^102013311021 is an apocalyptic number.

It is an amenable number.

102013311021 is a deficient number, since it is larger than the sum of its proper divisors (36949961427).

102013311021 is a wasteful number, since it uses less digits than its factorization.

102013311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 102013311021 its reverse (120113310201), we get a palindrome (222126621222).

The spelling of 102013311021 in words is "one hundred two billion, thirteen million, three hundred eleven thousand, twenty-one".