2221402421400 has 96 divisors (see below), whose sum is σ = 6953205442560. Its totient is φ = 586622759040.

The previous prime is 2221402421393. The next prime is 2221402421417. The reversal of 2221402421400 is 41242041222.

It is a happy number.

It is a super-3 number, since 3×2221402421400³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 17910712 + ... + 18034311.

It is an arithmetic number, because the mean of its divisors is an integer number (72429223360).

Almost surely, 2^{2221402421400} is an apocalyptic number.

2221402421400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221402421400 is an abundant number, since it is smaller than the sum of its proper divisors (4731803021160).

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

2221402421400 is a wasteful number, since it uses less digits than its factorization.

2221402421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35945145 (or 35945136 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 2221402421400 its reverse (41242041222), we get a palindrome (2262644462622).

The spelling of 2221402421400 in words is "two trillion, two hundred twenty-one billion, four hundred two million, four hundred twenty-one thousand, four hundred".