2222021000020 has 24 divisors (see below), whose sum is σ = 4677327832968. Its totient is φ = 886697212800.

The previous prime is 2222021000009. The next prime is 2222021000071. The reversal of 2222021000020 is 200001202222.

It can be written as a sum of positive squares in 4 ways, for example, as 2600388036 + 2219420611984 = 50994^2 + 1489772^2 .

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, 131940571 + ... + 131957410.

It is an arithmetic number, because the mean of its divisors is an integer number (194888659707).

Almost surely, 2^{2222021000020} is an apocalyptic number.

2222021000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222021000020 is an abundant number, since it is smaller than the sum of its proper divisors (2455306832948).

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

2222021000020 is a wasteful number, since it uses less digits than its factorization.

2222021000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263898411 (or 263898409 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 2222021000020 its reverse (200001202222), we get a palindrome (2422022202242).

The spelling of 2222021000020 in words is "two trillion, two hundred twenty-two billion, twenty-one million, twenty", and thus it is an aban number.