122145694520 has 64 divisors (see below), whose sum is σ = 277062681600. Its totient is φ = 48462572160.

The previous prime is 122145694513. The next prime is 122145694537. The reversal of 122145694520 is 25496541221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2435861 + ... + 2485499.

It is an arithmetic number, because the mean of its divisors is an integer number (4329104400).

Almost surely, 2^122145694520 is an apocalyptic number.

122145694520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122145694520 is an abundant number, since it is smaller than the sum of its proper divisors (154916987080).

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

122145694520 is a wasteful number, since it uses less digits than its factorization.

122145694520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50148 (or 50144 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 122145694520 in words is "one hundred twenty-two billion, one hundred forty-five million, six hundred ninety-four thousand, five hundred twenty".