121701356777 has 24 divisors (see below), whose sum is σ = 164641138368. Its totient is φ = 87537431520.

The previous prime is 121701356767. The next prime is 121701356809. The reversal of 121701356777 is 777653107121.

It is not a de Polignac number, because 121701356777 - 2¹⁴ = 121701340393 is a prime.

It is a super-2 number, since 2×121701356777² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121701356767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5515343 + ... + 5537364.

It is an arithmetic number, because the mean of its divisors is an integer number (6860047432).

Almost surely, 2^121701356777 is an apocalyptic number.

It is an amenable number.

121701356777 is a deficient number, since it is larger than the sum of its proper divisors (42939781591).

121701356777 is a wasteful number, since it uses less digits than its factorization.

121701356777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052749 (or 11052738 counting only the distinct ones).

The product of its (nonzero) digits is 432180, while the sum is 47.

The spelling of 121701356777 in words is "one hundred twenty-one billion, seven hundred one million, three hundred fifty-six thousand, seven hundred seventy-seven".