122520352144 has 40 divisors (see below), whose sum is σ = 246457297152. Its totient is φ = 58941317760.

The previous prime is 122520352127. The next prime is 122520352181. The reversal of 122520352144 is 441253025221.

It is a happy number.

It is a super-2 number, since 2×122520352144² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628114 + ... + 799729.

Almost surely, 2^122520352144 is an apocalyptic number.

It is an amenable number.

122520352144 is an abundant number, since it is smaller than the sum of its proper divisors (123936945008).

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

122520352144 is a wasteful number, since it uses less digits than its factorization.

122520352144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428055 (or 1428049 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 122520352144 its reverse (441253025221), we get a palindrome (563773377365).

The spelling of 122520352144 in words is "one hundred twenty-two billion, five hundred twenty million, three hundred fifty-two thousand, one hundred forty-four".