121201982 has 16 divisors (see below), whose sum is σ = 199783152. Its totient is φ = 54688320.

The previous prime is 121201981. The next prime is 121202017. The reversal of 121201982 is 289102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201981) 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, 17093 + ... + 23120.

It is an arithmetic number, because the mean of its divisors is an integer number (12486447).

Almost surely, 2^121201982 is an apocalyptic number.

121201982 is a deficient number, since it is larger than the sum of its proper divisors (78581170).

121201982 is a wasteful number, since it uses less digits than its factorization.

121201982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40363.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 121201982 is about 11009.1771717963. The cubic root of 121201982 is about 494.8838036278.

The spelling of 121201982 in words is "one hundred twenty-one million, two hundred one thousand, nine hundred eighty-two".