122621745552 has 160 divisors (see below), whose sum is σ = 339704471808. Its totient is φ = 37978963968.

The previous prime is 122621745517. The next prime is 122621745553. The reversal of 122621745552 is 255547126221.

It is not an unprimeable number, because it can be changed into a prime (122621745553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29666878 + ... + 29671010.

Almost surely, 2^122621745552 is an apocalyptic number.

122621745552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122621745552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169852235904).

122621745552 is an abundant number, since it is smaller than the sum of its proper divisors (217082726256).

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

122621745552 is a wasteful number, since it uses less digits than its factorization.

122621745552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617 (or 4611 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The spelling of 122621745552 in words is "one hundred twenty-two billion, six hundred twenty-one million, seven hundred forty-five thousand, five hundred fifty-two".