2121222020000 has 60 divisors (see below), whose sum is σ = 5218524401706. Its totient is φ = 848488800000.

The previous prime is 2121222019967. The next prime is 2121222020023. The reversal of 2121222020000 is 202221212.

It can be written as a sum of positive squares in 5 ways, for example, as 68776111504 + 2052445908496 = 262252^2 + 1432636^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 53010551 + ... + 53050550.

Almost surely, 2^{2121222020000} is an apocalyptic number.

2121222020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121222020000 is an abundant number, since it is smaller than the sum of its proper divisors (3097302381706).

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

2121222020000 is an equidigital number, since it uses as much as digits as its factorization.

2121222020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106061131 (or 106061108 counting only the distinct ones).

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

Adding to 2121222020000 its reverse (202221212), we get a palindrome (2121424241212).

The spelling of 2121222020000 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty thousand".