121531552050121 has 8 divisors (see below), whose sum is σ = 121741093339560. Its totient is φ = 121322051440128.

The previous prime is 121531552050101. The next prime is 121531552050191. The reversal of 121531552050121 is 121050255135121.

It can be written as a sum of positive squares in 4 ways, for example, as 212672234896 + 121318879815225 = 461164^2 + 11014485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121531552050121 - 2¹¹ = 121531552048073 is a prime.

It is a super-2 number, since 2×121531552050121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121531552050101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4186596 + ... + 16142821.

It is an arithmetic number, because the mean of its divisors is an integer number (15217636667445).

Almost surely, 2^{121531552050121} is an apocalyptic number.

It is an amenable number.

121531552050121 is a deficient number, since it is larger than the sum of its proper divisors (209541289439).

121531552050121 is an equidigital number, since it uses as much as digits as its factorization.

121531552050121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20339723.

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 121531552050121 in words is "one hundred twenty-one trillion, five hundred thirty-one billion, five hundred fifty-two million, fifty thousand, one hundred twenty-one".