121700755 has 16 divisors (see below), whose sum is σ = 160473600. Its totient is φ = 87867360.

The previous prime is 121700753. The next prime is 121700771. The reversal of 121700755 is 557007121.

It is not a de Polignac number, because 121700755 - 2¹ = 121700753 is a prime.

It is a super-2 number, since 2×121700755² = 29622147535140050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121700753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315 + ... + 15604.

It is an arithmetic number, because the mean of its divisors is an integer number (10029600).

Almost surely, 2^121700755 is an apocalyptic number.

121700755 is a deficient number, since it is larger than the sum of its proper divisors (38772845).

121700755 is a wasteful number, since it uses less digits than its factorization.

121700755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16074.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 121700755 is about 11031.8065157072. The cubic root of 121700755 is about 495.5617266952.

Adding to 121700755 its reverse (557007121), we get a palindrome (678707876).

The spelling of 121700755 in words is "one hundred twenty-one million, seven hundred thousand, seven hundred fifty-five".