1210123222400 has 96 divisors (see below), whose sum is σ = 2990079214200. Its totient is φ = 483936481280.

The previous prime is 1210123222351. The next prime is 1210123222417. The reversal of 1210123222400 is 42223210121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14431796 + ... + 14515404.

Almost surely, 2^{1210123222400} is an apocalyptic number.

1210123222400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210123222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495039607100).

1210123222400 is an abundant number, since it is smaller than the sum of its proper divisors (1779955991800).

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

1210123222400 is an equidigital number, since it uses as much as digits as its factorization.

1210123222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88156 (or 88139 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1210123222400 its reverse (42223210121), we get a palindrome (1252346432521).

The spelling of 1210123222400 in words is "one trillion, two hundred ten billion, one hundred twenty-three million, two hundred twenty-two thousand, four hundred".