121550254052 has 6 divisors (see below), whose sum is σ = 212712944598. Its totient is φ = 60775127024.

The previous prime is 121550254009. The next prime is 121550254057. The reversal of 121550254052 is 250452055121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64422561856 + 57127692196 = 253816^2 + 239014^2 .

It is not an unprimeable number, because it can be changed into a prime (121550254057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15193781753 + ... + 15193781760.

It is an arithmetic number, because the mean of its divisors is an integer number (35452157433).

Almost surely, 2^121550254052 is an apocalyptic number.

It is an amenable number.

121550254052 is a deficient number, since it is larger than the sum of its proper divisors (91162690546).

121550254052 is a wasteful number, since it uses less digits than its factorization.

121550254052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30387563517 (or 30387563515 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 121550254052 in words is "one hundred twenty-one billion, five hundred fifty million, two hundred fifty-four thousand, fifty-two".