121047144 has 32 divisors (see below), whose sum is σ = 304935840. Its totient is φ = 40040000.

The previous prime is 121047103. The next prime is 121047149. The reversal of 121047144 is 441740121.

It is a super-2 number, since 2×121047144² = 29304822141113472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (121047149) 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, 16107 + ... + 22394.

It is an arithmetic number, because the mean of its divisors is an integer number (9529245).

Almost surely, 2^121047144 is an apocalyptic number.

It is an amenable number.

121047144 is an abundant number, since it is smaller than the sum of its proper divisors (183888696).

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

121047144 is a wasteful number, since it uses less digits than its factorization.

121047144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38641 (or 38637 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 121047144 is about 11002.1427004016. The cubic root of 121047144 is about 494.6729724431.

Adding to 121047144 its reverse (441740121), we get a palindrome (562787265).

The spelling of 121047144 in words is "one hundred twenty-one million, forty-seven thousand, one hundred forty-four".