121245356 has 6 divisors (see below), whose sum is σ = 212179380. Its totient is φ = 60622676.

The previous prime is 121245353. The next prime is 121245359. The reversal of 121245356 is 653542121.

It is an interprime number because it is at equal distance from previous prime (121245353) and next prime (121245359).

It is not an unprimeable number, because it can be changed into a prime (121245353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15155666 + ... + 15155673.

It is an arithmetic number, because the mean of its divisors is an integer number (35363230).

Almost surely, 2^121245356 is an apocalyptic number.

It is an amenable number.

121245356 is a deficient number, since it is larger than the sum of its proper divisors (90934024).

121245356 is a wasteful number, since it uses less digits than its factorization.

121245356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30311343 (or 30311341 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 121245356 is about 11011.1468975761. The cubic root of 121245356 is about 494.9428305230.

Adding to 121245356 its reverse (653542121), we get a palindrome (774787477).

The spelling of 121245356 in words is "one hundred twenty-one million, two hundred forty-five thousand, three hundred fifty-six".