22121200323020 has 48 divisors (see below), whose sum is σ = 48546238422528. Its totient is φ = 8458814239680.

The previous prime is 22121200323011. The next prime is 22121200323049. The reversal of 22121200323020 is 2032300212122.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 22121200322983 and 22121200323001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273601346 + ... + 273682185.

It is an arithmetic number, because the mean of its divisors is an integer number (1011379967136).

Almost surely, 2^{22121200323020} is an apocalyptic number.

22121200323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121200323020 is an abundant number, since it is smaller than the sum of its proper divisors (26425038099508).

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

22121200323020 is a wasteful number, since it uses less digits than its factorization.

22121200323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547283630 (or 547283628 counting only the distinct ones).

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

Adding to 22121200323020 its reverse (2032300212122), we get a palindrome (24153500535142).

The spelling of 22121200323020 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred million, three hundred twenty-three thousand, twenty".