20202221012000 has 96 divisors (see below), whose sum is σ = 49923776985264. Its totient is φ = 8034177792000.

The previous prime is 20202221011981. The next prime is 20202221012003. The reversal of 20202221012000 is 21012220202.

It can be written as a sum of positive squares in 8 ways, for example, as 7379719966096 + 12822501045904 = 2716564^2 + 3580852^2 .

It is not an unprimeable number, because it can be changed into a prime (20202221012003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13904981 + ... + 15288980.

Almost surely, 2^{20202221012000} is an apocalyptic number.

20202221012000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202221012000 is an abundant number, since it is smaller than the sum of its proper divisors (29721555973264).

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

20202221012000 is a wasteful number, since it uses less digits than its factorization.

20202221012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29194159 (or 29194141 counting only the distinct ones).

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

Adding to 20202221012000 its reverse (21012220202), we get a palindrome (20223233232202).

The spelling of 20202221012000 in words is "twenty trillion, two hundred two billion, two hundred twenty-one million, twelve thousand".