121902816267 has 16 divisors (see below), whose sum is σ = 180762341760. Its totient is φ = 81194034600.

The previous prime is 121902816257. The next prime is 121902816313. The reversal of 121902816267 is 762618209121.

121902816267 is a `hidden beast` number, since 1 + 2 + 19 + 0 + 2 + 8 + 1 + 626 + 7 = 666.

It is not a de Polignac number, because 121902816267 - 2²⁸ = 121634380811 is a prime.

It is a super-2 number, since 2×121902816267² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121902816257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039709 + ... + 2098622.

It is an arithmetic number, because the mean of its divisors is an integer number (11297646360).

Almost surely, 2^121902816267 is an apocalyptic number.

121902816267 is a deficient number, since it is larger than the sum of its proper divisors (58859525493).

121902816267 is a wasteful number, since it uses less digits than its factorization.

121902816267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139431 (or 4139425 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 121902816267 in words is "one hundred twenty-one billion, nine hundred two million, eight hundred sixteen thousand, two hundred sixty-seven".