121213244 has 6 divisors (see below), whose sum is σ = 212123184. Its totient is φ = 60606620.

The previous prime is 121213241. The next prime is 121213271. The reversal of 121213244 is 442312121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121213241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15151652 + ... + 15151659.

It is an arithmetic number, because the mean of its divisors is an integer number (35353864).

Almost surely, 2^121213244 is an apocalyptic number.

It is an amenable number.

121213244 is a deficient number, since it is larger than the sum of its proper divisors (90909940).

121213244 is a wasteful number, since it uses less digits than its factorization.

121213244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30303315 (or 30303313 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 121213244 is about 11009.6886422823. The cubic root of 121213244 is about 494.8991312341.

Adding to 121213244 its reverse (442312121), we get a palindrome (563525365).

The spelling of 121213244 in words is "one hundred twenty-one million, two hundred thirteen thousand, two hundred forty-four".