122521553020 has 12 divisors (see below), whose sum is σ = 257295261384. Its totient is φ = 49008621200.

The previous prime is 122521552913. The next prime is 122521553027. The reversal of 122521553020 is 20355125221.

It is a super-2 number, since 2×122521553020² (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 122521553020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122521553027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063038806 + ... + 3063038845.

It is an arithmetic number, because the mean of its divisors is an integer number (21441271782).

Almost surely, 2^122521553020 is an apocalyptic number.

122521553020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122521553020 is an abundant number, since it is smaller than the sum of its proper divisors (134773708364).

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

122521553020 is a wasteful number, since it uses less digits than its factorization.

122521553020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126077660 (or 6126077658 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 122521553020 its reverse (20355125221), we get a palindrome (142876678241).

The spelling of 122521553020 in words is "one hundred twenty-two billion, five hundred twenty-one million, five hundred fifty-three thousand, twenty".