22120222210000 has 50 divisors (see below), whose sum is σ = 53555270016842. Its totient is φ = 8848088880000.

The previous prime is 22120222209931. The next prime is 22120222210057. The reversal of 22120222210000 is 1222202122.

It can be written as a sum of positive squares in 5 ways, for example, as 2107339982224 + 20012882227776 = 1451668^2 + 4473576^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1106001111 + ... + 1106021110.

Almost surely, 2^{22120222210000} is an apocalyptic number.

22120222210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120222210000 is an abundant number, since it is smaller than the sum of its proper divisors (31435047806842).

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

22120222210000 is an equidigital number, since it uses as much as digits as its factorization.

22120222210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212022249 (or 2212022228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22120222210000 its reverse (1222202122), we get a palindrome (22121444412122).

The spelling of 22120222210000 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, two hundred ten thousand".