122515213512 has 32 divisors (see below), whose sum is σ = 307087764480. Its totient is φ = 40731773760.

The previous prime is 122515213507. The next prime is 122515213517. The reversal of 122515213512 is 215312515221.

It is an interprime number because it is at equal distance from previous prime (122515213507) and next prime (122515213517).

It is a self number, because there is not a number n which added to its sum of digits gives 122515213512.

It is not an unprimeable number, because it can be changed into a prime (122515213517) 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, 6655039 + ... + 6673422.

It is an arithmetic number, because the mean of its divisors is an integer number (9596492640).

Almost surely, 2^122515213512 is an apocalyptic number.

122515213512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122515213512 is an abundant number, since it is smaller than the sum of its proper divisors (184572550968).

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

122515213512 is a wasteful number, since it uses less digits than its factorization.

122515213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328853 (or 13328849 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

Adding to 122515213512 its reverse (215312515221), we get a palindrome (337827728733).

The spelling of 122515213512 in words is "one hundred twenty-two billion, five hundred fifteen million, two hundred thirteen thousand, five hundred twelve".