122123011312 has 80 divisors (see below), whose sum is σ = 255381654528. Its totient is φ = 56428162560.

The previous prime is 122123011277. The next prime is 122123011327. The reversal of 122123011312 is 213110321221.

It is a super-2 number, since 2×122123011312² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122123011312.

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, 1514773 + ... + 1593355.

Almost surely, 2^122123011312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122123011312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127690827264).

122123011312 is an abundant number, since it is smaller than the sum of its proper divisors (133258643216).

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

122123011312 is a wasteful number, since it uses less digits than its factorization.

122123011312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78758 (or 78752 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 122123011312 its reverse (213110321221), we get a palindrome (335233332533).

The spelling of 122123011312 in words is "one hundred twenty-two billion, one hundred twenty-three million, eleven thousand, three hundred twelve".