121960777 has 8 divisors (see below), whose sum is σ = 124257672. Its totient is φ = 119673600.

The previous prime is 121960757. The next prime is 121960799. The reversal of 121960777 is 777069121.

It can be written as a sum of positive squares in 4 ways, for example, as 13571856 + 108388921 = 3684^2 + 10411^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121960777 is a prime.

It is a super-2 number, since 2×121960777² = 29748862252887458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121960717) 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, 25953 + ... + 30289.

It is an arithmetic number, because the mean of its divisors is an integer number (15532209).

Almost surely, 2^121960777 is an apocalyptic number.

It is an amenable number.

121960777 is a deficient number, since it is larger than the sum of its proper divisors (2296895).

121960777 is an equidigital number, since it uses as much as digits as its factorization.

121960777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859.

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 121960777 is about 11043.5853326716. The cubic root of 121960777 is about 495.9144094963.

The spelling of 121960777 in words is "one hundred twenty-one million, nine hundred sixty thousand, seven hundred seventy-seven".