2121400234422 has 48 divisors (see below), whose sum is σ = 5331393929472. Its totient is φ = 597067867440.

The previous prime is 2121400234367. The next prime is 2121400234441. The reversal of 2121400234422 is 2244320041212.

It is a happy number.

2121400234422 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 4 + 0 + 0 + 234 + 422 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125637154 + ... + 125654037.

It is an arithmetic number, because the mean of its divisors is an integer number (111070706864).

Almost surely, 2^{2121400234422} is an apocalyptic number.

2121400234422 is an abundant number, since it is smaller than the sum of its proper divisors (3209993695050).

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

2121400234422 is a wasteful number, since it uses less digits than its factorization.

2121400234422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251291273 (or 251291270 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 2121400234422 its reverse (2244320041212), we get a palindrome (4365720275634).

The spelling of 2121400234422 in words is "two trillion, one hundred twenty-one billion, four hundred million, two hundred thirty-four thousand, four hundred twenty-two".