121830094021 has 4 divisors (see below), whose sum is σ = 121843013292. Its totient is φ = 121817174752.

The previous prime is 121830094019. The next prime is 121830094027. The reversal of 121830094021 is 120490038121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101981229025 + 19848864996 = 319345^2 + 140886^2 .

It is a cyclic number.

It is not a de Polignac number, because 121830094021 - 2¹ = 121830094019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121830094027) 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, 6445480 + ... + 6464353.

It is an arithmetic number, because the mean of its divisors is an integer number (30460753323).

Almost surely, 2^121830094021 is an apocalyptic number.

It is an amenable number.

121830094021 is a deficient number, since it is larger than the sum of its proper divisors (12919271).

121830094021 is an equidigital number, since it uses as much as digits as its factorization.

121830094021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12919270.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 121830094021 in words is "one hundred twenty-one billion, eight hundred thirty million, ninety-four thousand, twenty-one".