222201122120020 has 24 divisors (see below), whose sum is σ = 466623053505000. Its totient is φ = 88880316076032.

The previous prime is 222201122119937. The next prime is 222201122120051. The reversal of 222201122120020 is 20021221102222.

It can be written as a sum of positive squares in 4 ways, for example, as 50262626668996 + 171938495451024 = 7089614^2 + 13112532^2 .

It is a super-3 number, since 3×222201122120020³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222201122120020.

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, 6028156 + ... + 21925804.

It is an arithmetic number, because the mean of its divisors is an integer number (19442627229375).

Almost surely, 2^{222201122120020} is an apocalyptic number.

222201122120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222201122120020 is an abundant number, since it is smaller than the sum of its proper divisors (244421931384980).

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

222201122120020 is a wasteful number, since it uses less digits than its factorization.

222201122120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16596507 (or 16596505 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222201122120020 its reverse (20021221102222), we get a palindrome (242222343222242).

The spelling of 222201122120020 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred twenty-two million, one hundred twenty thousand, twenty".