22201120020020 has 24 divisors (see below), whose sum is σ = 46651328089800. Its totient is φ = 8874928760832.

The previous prime is 22201120019971. The next prime is 22201120020043. The reversal of 22201120020020 is 2002002110222.

It can be written as a sum of positive squares in 4 ways, for example, as 15019438242064 + 7181681777956 = 3875492^2 + 2679866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22201120019977 and 22201120020004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344919965 + ... + 344984324.

It is an arithmetic number, because the mean of its divisors is an integer number (1943805337075).

Almost surely, 2^{22201120020020} is an apocalyptic number.

22201120020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201120020020 is an abundant number, since it is smaller than the sum of its proper divisors (24450208069780).

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

22201120020020 is a wasteful number, since it uses less digits than its factorization.

22201120020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689905907 (or 689905905 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22201120020020 its reverse (2002002110222), we get a palindrome (24203122130242).

The spelling of 22201120020020 in words is "twenty-two trillion, two hundred one billion, one hundred twenty million, twenty thousand, twenty".