121320936 has 64 divisors (see below), whose sum is σ = 367646400. Its totient is φ = 36763200.

The previous prime is 121320917. The next prime is 121320937. The reversal of 121320936 is 639023121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121320937) 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, 23155 + ... + 27906.

It is an arithmetic number, because the mean of its divisors is an integer number (5744475).

Almost surely, 2^121320936 is an apocalyptic number.

It is an amenable number.

121320936 is an abundant number, since it is smaller than the sum of its proper divisors (246325464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121320936 is a wasteful number, since it uses less digits than its factorization.

121320936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51087 (or 51077 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 121320936 is about 11014.5783396370. The cubic root of 121320936 is about 495.0456523551.

The spelling of 121320936 in words is "one hundred twenty-one million, three hundred twenty thousand, nine hundred thirty-six".