22142142400 has 168 divisors, whose sum is σ = 63019716480. Its totient is φ = 7499811840.

The previous prime is 22142142359. The next prime is 22142142403. The reversal of 22142142400 is 424124122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142142403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 917691 + ... + 941509.

It is an arithmetic number, because the mean of its divisors is an integer number (375117360).

Almost surely, 2^22142142400 is an apocalyptic number.

22142142400 is a gapful number since it is divisible by the number (20) 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 22142142400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31509858240).

22142142400 is an abundant number, since it is smaller than the sum of its proper divisors (40877574080).

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

22142142400 is a wasteful number, since it uses less digits than its factorization.

22142142400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23931 (or 23916 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22142142400 its reverse (424124122), we get a palindrome (22566266522).

The spelling of 22142142400 in words is "twenty-two billion, one hundred forty-two million, one hundred forty-two thousand, four hundred".