121400233 has 4 divisors (see below), whose sum is σ = 126678528. Its totient is φ = 116121940.

The previous prime is 121400231. The next prime is 121400239. The reversal of 121400233 is 332004121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121400233 - 2¹ = 121400231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121400231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639113 + ... + 2639158.

It is an arithmetic number, because the mean of its divisors is an integer number (31669632).

Almost surely, 2^121400233 is an apocalyptic number.

It is an amenable number.

121400233 is a deficient number, since it is larger than the sum of its proper divisors (5278295).

121400233 is an equidigital number, since it uses as much as digits as its factorization.

121400233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278294.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121400233 is about 11018.1773901131. The cubic root of 121400233 is about 495.1534850366.

Adding to 121400233 its reverse (332004121), we get a palindrome (453404354).

The spelling of 121400233 in words is "one hundred twenty-one million, four hundred thousand, two hundred thirty-three".