121223410203 has 64 divisors (see below), whose sum is σ = 189977216000. Its totient is φ = 68726568960.

The previous prime is 121223410201. The next prime is 121223410237. The reversal of 121223410203 is 302014322121.

It is not a de Polignac number, because 121223410203 - 2¹ = 121223410201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121223410203.

It is not an unprimeable number, because it can be changed into a prime (121223410201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113398353 + ... + 113399421.

It is an arithmetic number, because the mean of its divisors is an integer number (2968394000).

Almost surely, 2^121223410203 is an apocalyptic number.

121223410203 is a deficient number, since it is larger than the sum of its proper divisors (68753805797).

121223410203 is a wasteful number, since it uses less digits than its factorization.

121223410203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 121223410203 its reverse (302014322121), we get a palindrome (423237732324).

The spelling of 121223410203 in words is "one hundred twenty-one billion, two hundred twenty-three million, four hundred ten thousand, two hundred three".