121150294873 has 4 divisors (see below), whose sum is σ = 121360261300. Its totient is φ = 120940328448.

The previous prime is 121150294847. The next prime is 121150294901. The reversal of 121150294873 is 378492051121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378492051121 = 2551 ⋅148370071.

It can be written as a sum of positive squares in 2 ways, for example, as 104906027664 + 16244267209 = 323892^2 + 127453^2 .

It is a cyclic number.

It is not a de Polignac number, because 121150294873 - 2²⁵ = 121116740441 is a prime.

It is a super-2 number, since 2×121150294873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121150294813) 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, 104982348 + ... + 104983501.

It is an arithmetic number, because the mean of its divisors is an integer number (30340065325).

Almost surely, 2^121150294873 is an apocalyptic number.

It is an amenable number.

121150294873 is a deficient number, since it is larger than the sum of its proper divisors (209966427).

121150294873 is an equidigital number, since it uses as much as digits as its factorization.

121150294873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209966426.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 121150294873 in words is "one hundred twenty-one billion, one hundred fifty million, two hundred ninety-four thousand, eight hundred seventy-three".