121201798 has 16 divisors (see below), whose sum is σ = 191600640. Its totient is φ = 57342600.

The previous prime is 121201777. The next prime is 121201799. The reversal of 121201798 is 897102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45483 + ... + 48073.

It is an arithmetic number, because the mean of its divisors is an integer number (11975040).

Almost surely, 2^121201798 is an apocalyptic number.

121201798 is a deficient number, since it is larger than the sum of its proper divisors (70398842).

121201798 is a wasteful number, since it uses less digits than its factorization.

121201798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 121201798 is about 11009.1688151286. The cubic root of 121201798 is about 494.8835531955.

The spelling of 121201798 in words is "one hundred twenty-one million, two hundred one thousand, seven hundred ninety-eight".