22120100001020 has 48 divisors (see below), whose sum is σ = 53192539270080. Its totient is φ = 7569134390784.

The previous prime is 22120100001019. The next prime is 22120100001031. The reversal of 22120100001020 is 2010000102122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22120100000992 and 22120100001010.

It is a congruent number.

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, 155135729 + ... + 155278248.

It is an arithmetic number, because the mean of its divisors is an integer number (1108177901460).

Almost surely, 2^{22120100001020} is an apocalyptic number.

22120100001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120100001020 is an abundant number, since it is smaller than the sum of its proper divisors (31072439269060).

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

22120100001020 is a wasteful number, since it uses less digits than its factorization.

22120100001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310414502 (or 310414500 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22120100001020 its reverse (2010000102122), we get a palindrome (24130100103142).

The spelling of 22120100001020 in words is "twenty-two trillion, one hundred twenty billion, one hundred million, one thousand, twenty".