121198027 has 4 divisors (see below), whose sum is σ = 121659120. Its totient is φ = 120736936.

The previous prime is 121198019. The next prime is 121198057. The reversal of 121198027 is 720891121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121198027 - 2³ = 121198019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121198027.

It is not an unprimeable number, because it can be changed into a prime (121198057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230152 + ... + 230677.

It is an arithmetic number, because the mean of its divisors is an integer number (30414780).

Almost surely, 2^121198027 is an apocalyptic number.

121198027 is a deficient number, since it is larger than the sum of its proper divisors (461093).

121198027 is an equidigital number, since it uses as much as digits as its factorization.

121198027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461092.

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

The square root of 121198027 is about 11008.9975474609. The cubic root of 121198027 is about 494.8784206390.

The spelling of 121198027 in words is "one hundred twenty-one million, one hundred ninety-eight thousand, twenty-seven".