22201000201220 has 24 divisors (see below), whose sum is σ = 46625390519064. Its totient is φ = 8879773395456.

The previous prime is 22201000201217. The next prime is 22201000201243. The reversal of 22201000201220 is 2210200010222.

It can be written as a sum of positive squares in 4 ways, for example, as 473170639876 + 21727829561344 = 687874^2 + 4661312^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22201000201195 and 22201000201204.

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, 38877269 + ... + 39444188.

It is an arithmetic number, because the mean of its divisors is an integer number (1942724604961).

Almost surely, 2^{22201000201220} is an apocalyptic number.

22201000201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201000201220 is an abundant number, since it is smaller than the sum of its proper divisors (24424390317844).

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

22201000201220 is a wasteful number, since it uses less digits than its factorization.

22201000201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78335639 (or 78335637 counting only the distinct ones).

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

Adding to 22201000201220 its reverse (2210200010222), we get a palindrome (24411200211442).

The spelling of 22201000201220 in words is "twenty-two trillion, two hundred one billion, two hundred one thousand, two hundred twenty".