122150513412 has 36 divisors (see below), whose sum is σ = 308800231740. Its totient is φ = 40712765952.

The previous prime is 122150513411. The next prime is 122150513417. The reversal of 122150513412 is 214315051221.

It is a happy number.

122150513412 is a `hidden beast` number, since 1 + 2 + 21 + 505 + 134 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43507285056 + 78643228356 = 208584^2 + 280434^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (122150513411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206764 + ... + 535772.

It is an arithmetic number, because the mean of its divisors is an integer number (8577784215).

Almost surely, 2^122150513412 is an apocalyptic number.

122150513412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122150513412 is an abundant number, since it is smaller than the sum of its proper divisors (186649718328).

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

122150513412 is a wasteful number, since it uses less digits than its factorization.

122150513412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339332 (or 339327 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 122150513412 its reverse (214315051221), we get a palindrome (336465564633).

The spelling of 122150513412 in words is "one hundred twenty-two billion, one hundred fifty million, five hundred thirteen thousand, four hundred twelve".