121969577285 has 8 divisors (see below), whose sum is σ = 146514233376. Its totient is φ = 97475168080.

The previous prime is 121969577269. The next prime is 121969577291. The reversal of 121969577285 is 582775969121.

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

It is not a de Polignac number, because 121969577285 - 2⁴ = 121969577269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12556379 + ... + 12566088.

It is an arithmetic number, because the mean of its divisors is an integer number (18314279172).

Almost surely, 2^121969577285 is an apocalyptic number.

It is an amenable number.

121969577285 is a deficient number, since it is larger than the sum of its proper divisors (24544656091).

121969577285 is an equidigital number, since it uses as much as digits as its factorization.

121969577285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25123443.

The product of its digits is 19051200, while the sum is 62.

The spelling of 121969577285 in words is "one hundred twenty-one billion, nine hundred sixty-nine million, five hundred seventy-seven thousand, two hundred eighty-five".