121233402 has 16 divisors (see below), whose sum is σ = 269407680. Its totient is φ = 40411116.

The previous prime is 121233401. The next prime is 121233421. The reversal of 121233402 is 204332121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121233401) 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, 1122478 + ... + 1122585.

It is an arithmetic number, because the mean of its divisors is an integer number (16837980).

Almost surely, 2^121233402 is an apocalyptic number.

121233402 is an abundant number, since it is smaller than the sum of its proper divisors (148174278).

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

121233402 is a wasteful number, since it uses less digits than its factorization.

121233402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245074 (or 2245068 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 121233402 is about 11010.6040706221. The cubic root of 121233402 is about 494.9265639452.

Adding to 121233402 its reverse (204332121), we get a palindrome (325565523).

The spelling of 121233402 in words is "one hundred twenty-one million, two hundred thirty-three thousand, four hundred two".