121149147 has 16 divisors (see below), whose sum is σ = 190564352. Its totient is φ = 66994560.

The previous prime is 121149143. The next prime is 121149167. The reversal of 121149147 is 741941121.

It is not a de Polignac number, because 121149147 - 2² = 121149143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121149143) 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, 92398 + ... + 93699.

It is an arithmetic number, because the mean of its divisors is an integer number (11910272).

Almost surely, 2^121149147 is an apocalyptic number.

121149147 is a deficient number, since it is larger than the sum of its proper divisors (69415205).

121149147 is a wasteful number, since it uses less digits than its factorization.

121149147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186138.

The product of its digits is 2016, while the sum is 30.

The square root of 121149147 is about 11006.7773212689. Note that the first 3 decimals coincide. The cubic root of 121149147 is about 494.8118823999.

The spelling of 121149147 in words is "one hundred twenty-one million, one hundred forty-nine thousand, one hundred forty-seven".