121443240230 has 16 divisors (see below), whose sum is σ = 235413050544. Its totient is φ = 44840580960.

The previous prime is 121443240179. The next prime is 121443240239. The reversal of 121443240230 is 32042344121.

It is a super-2 number, since 2×121443240230² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121443240230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121443240239) 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, 467089256 + ... + 467089515.

It is an arithmetic number, because the mean of its divisors is an integer number (14713315659).

Almost surely, 2^121443240230 is an apocalyptic number.

121443240230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121443240230 is a deficient number, since it is larger than the sum of its proper divisors (113969810314).

121443240230 is a wasteful number, since it uses less digits than its factorization.

121443240230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934178791.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 121443240230 its reverse (32042344121), we get a palindrome (153485584351).

The spelling of 121443240230 in words is "one hundred twenty-one billion, four hundred forty-three million, two hundred forty thousand, two hundred thirty".