222211002120020 has 24 divisors (see below), whose sum is σ = 466656485597064. Its totient is φ = 88881852058496.

The previous prime is 222211002120017. The next prime is 222211002120067. The reversal of 222211002120020 is 20021200112222.

It is a happy number.

222211002120020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72730399916944 + 149480602203076 = 8528212^2 + 12226226^2 .

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, 158584367 + ... + 159979446.

It is an arithmetic number, because the mean of its divisors is an integer number (19444020233211).

Almost surely, 2^{222211002120020} is an apocalyptic number.

222211002120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222211002120020 is an abundant number, since it is smaller than the sum of its proper divisors (244445483477044).

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

222211002120020 is a wasteful number, since it uses less digits than its factorization.

222211002120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318598699 (or 318598697 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222211002120020 its reverse (20021200112222), we get a palindrome (242232202232242).

The spelling of 222211002120020 in words is "two hundred twenty-two trillion, two hundred eleven billion, two million, one hundred twenty thousand, twenty".