102009474021 has 64 divisors (see below), whose sum is σ = 173105952768. Its totient is φ = 52003531008.

The previous prime is 102009474013. The next prime is 102009474023. The reversal of 102009474021 is 120474900201.

It is not a de Polignac number, because 102009474021 - 2³ = 102009474013 is a prime.

It is a super-3 number, since 3×102009474021³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102009474021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102009474023) 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 63 ways as a sum of consecutive naturals, for example, 916810 + ... + 1022036.

It is an arithmetic number, because the mean of its divisors is an integer number (2704780512).

Almost surely, 2^102009474021 is an apocalyptic number.

It is an amenable number.

102009474021 is a deficient number, since it is larger than the sum of its proper divisors (71096478747).

102009474021 is a wasteful number, since it uses less digits than its factorization.

102009474021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105370.

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 102009474021 in words is "one hundred two billion, nine million, four hundred seventy-four thousand, twenty-one".