10140121215 has 64 divisors (see below), whose sum is σ = 20791372800. Its totient is φ = 4592909952.

The previous prime is 10140121213. The next prime is 10140121241. The reversal of 10140121215 is 51212104101.

It is not a de Polignac number, because 10140121215 - 2¹ = 10140121213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10140121213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53784 + ... + 152226.

It is an arithmetic number, because the mean of its divisors is an integer number (324865200).

Almost surely, 2^10140121215 is an apocalyptic number.

10140121215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10140121215 is an abundant number, since it is smaller than the sum of its proper divisors (10651251585).

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

10140121215 is a wasteful number, since it uses less digits than its factorization.

10140121215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98573 (or 98567 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 10140121215 its reverse (51212104101), we get a palindrome (61352225316).

The spelling of 10140121215 in words is "ten billion, one hundred forty million, one hundred twenty-one thousand, two hundred fifteen".