22131404300000 has 144 divisors (see below), whose sum is σ = 54551281713264. Its totient is φ = 8837808000000.

The previous prime is 22131404299999. The next prime is 22131404300009. The reversal of 22131404300000 is 340413122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131404300009) 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, 59915879 + ... + 60284121.

It is an arithmetic number, because the mean of its divisors is an integer number (378828345231).

Almost surely, 2^{22131404300000} is an apocalyptic number.

22131404300000 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 22131404300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27275640856632).

22131404300000 is an abundant number, since it is smaller than the sum of its proper divisors (32419877413264).

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

22131404300000 is an frugal number, since it uses more digits than its factorization.

22131404300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368879 (or 368851 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22131404300000 its reverse (340413122), we get a palindrome (22131744713122).

The spelling of 22131404300000 in words is "twenty-two trillion, one hundred thirty-one billion, four hundred four million, three hundred thousand".