121220196 has 24 divisors (see below), whose sum is σ = 283345440. Its totient is φ = 40335552.

The previous prime is 121220179. The next prime is 121220201. The reversal of 121220196 is 691022121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561 + ... + 15648.

It is an arithmetic number, because the mean of its divisors is an integer number (11806060).

Almost surely, 2^121220196 is an apocalyptic number.

It is an amenable number.

121220196 is an abundant number, since it is smaller than the sum of its proper divisors (162125244).

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

121220196 is a wasteful number, since it uses less digits than its factorization.

121220196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17803 (or 17801 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 121220196 is about 11010.0043596722. The cubic root of 121220196 is about 494.9085924471.

The spelling of 121220196 in words is "one hundred twenty-one million, two hundred twenty thousand, one hundred ninety-six".