121061385385 has 32 divisors (see below), whose sum is σ = 154936737792. Its totient is φ = 90613575360.

The previous prime is 121061385329. The next prime is 121061385407. The reversal of 121061385385 is 583583160121.

It is a happy number.

It is not a de Polignac number, because 121061385385 - 2¹³ = 121061377193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 978582 + ... + 1095328.

It is an arithmetic number, because the mean of its divisors is an integer number (4841773056).

Almost surely, 2^121061385385 is an apocalyptic number.

It is an amenable number.

121061385385 is a deficient number, since it is larger than the sum of its proper divisors (33875352407).

121061385385 is a wasteful number, since it uses less digits than its factorization.

121061385385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116973.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 121061385385 in words is "one hundred twenty-one billion, sixty-one million, three hundred eighty-five thousand, three hundred eighty-five".