121895770 has 16 divisors (see below), whose sum is σ = 223132320. Its totient is φ = 47931664.

The previous prime is 121895759. The next prime is 121895777. The reversal of 121895770 is 77598121.

It is not an unprimeable number, because it can be changed into a prime (121895777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102712 + ... + 103891.

It is an arithmetic number, because the mean of its divisors is an integer number (13945770).

Almost surely, 2^121895770 is an apocalyptic number.

121895770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121895770 is a deficient number, since it is larger than the sum of its proper divisors (101236550).

121895770 is a wasteful number, since it uses less digits than its factorization.

121895770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206669.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 121895770 is about 11040.6417385947. The cubic root of 121895770 is about 495.8262837937.

The spelling of 121895770 in words is "one hundred twenty-one million, eight hundred ninety-five thousand, seven hundred seventy".