121756226452 has 36 divisors (see below), whose sum is σ = 248825431764. Its totient is φ = 51978178560.

The previous prime is 121756226401. The next prime is 121756226539. The reversal of 121756226452 is 254622657121.

It can be written as a sum of positive squares in 2 ways, for example, as 119374396036 + 2381830416 = 345506^2 + 48804^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 121756226399 and 121756226408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1158199 + ... + 1258942.

It is an arithmetic number, because the mean of its divisors is an integer number (6911817549).

Almost surely, 2^121756226452 is an apocalyptic number.

It is an amenable number.

121756226452 is an abundant number, since it is smaller than the sum of its proper divisors (127069205312).

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

121756226452 is a wasteful number, since it uses less digits than its factorization.

121756226452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417416 (or 2417407 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The spelling of 121756226452 in words is "one hundred twenty-one billion, seven hundred fifty-six million, two hundred twenty-six thousand, four hundred fifty-two".