10515212112 has 40 divisors (see below), whose sum is σ = 27359741920. Its totient is φ = 3479852160.

The previous prime is 10515212069. The next prime is 10515212119. The reversal of 10515212112 is 21121251501.

It is a super-2 number, since 2×10515212112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10515212119) 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, 781339 + ... + 794682.

It is an arithmetic number, because the mean of its divisors is an integer number (683993548).

Almost surely, 2^10515212112 is an apocalyptic number.

10515212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10515212112 is an abundant number, since it is smaller than the sum of its proper divisors (16844529808).

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

10515212112 is a wasteful number, since it uses less digits than its factorization.

10515212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576171 (or 1576165 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 10515212112 its reverse (21121251501), we get a palindrome (31636463613).

The spelling of 10515212112 in words is "ten billion, five hundred fifteen million, two hundred twelve thousand, one hundred twelve".