20013121410 has 16 divisors (see below), whose sum is σ = 48031491456. Its totient is φ = 5336832368.

The previous prime is 20013121409. The next prime is 20013121411. The reversal of 20013121410 is 1412131002.

It is an interprime number because it is at equal distance from previous prime (20013121409) and next prime (20013121411).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20013121410.

It is not an unprimeable number, because it can be changed into a prime (20013121411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333551994 + ... + 333552053.

It is an arithmetic number, because the mean of its divisors is an integer number (3001968216).

Almost surely, 2^20013121410 is an apocalyptic number.

20013121410 is an abundant number, since it is smaller than the sum of its proper divisors (28018370046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013121410 is a wasteful number, since it uses less digits than its factorization.

20013121410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667104057.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20013121410 its reverse (1412131002), we get a palindrome (21425252412).

The spelling of 20013121410 in words is "twenty billion, thirteen million, one hundred twenty-one thousand, four hundred ten".