121699902715 has 8 divisors (see below), whose sum is σ = 148040430048. Its totient is φ = 96026224320.

The previous prime is 121699902713. The next prime is 121699902739. The reversal of 121699902715 is 517209996121.

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

It is not a de Polignac number, because 121699902715 - 2¹ = 121699902713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121699902713) 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, 166711831 + ... + 166712560.

It is an arithmetic number, because the mean of its divisors is an integer number (18505053756).

Almost surely, 2^121699902715 is an apocalyptic number.

121699902715 is a deficient number, since it is larger than the sum of its proper divisors (26340527333).

121699902715 is an equidigital number, since it uses as much as digits as its factorization.

121699902715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333424469.

The product of its (nonzero) digits is 612360, while the sum is 52.

The spelling of 121699902715 in words is "one hundred twenty-one billion, six hundred ninety-nine million, nine hundred two thousand, seven hundred fifteen".