20202221222001 has 96 divisors (see below), whose sum is σ = 37120686989568. Its totient is φ = 10302072168960.

The previous prime is 20202221221993. The next prime is 20202221222017. The reversal of 20202221222001 is 10022212220202.

20202221222001 is a `hidden beast` number, since 20 + 202 + 221 + 2 + 220 + 0 + 1 = 666.

It is not a de Polignac number, because 20202221222001 - 2³ = 20202221221993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20202221222201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2634406 + ... + 6880736.

It is an arithmetic number, because the mean of its divisors is an integer number (386673822808).

Almost surely, 2^{20202221222001} is an apocalyptic number.

20202221222001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20202221222001 is a deficient number, since it is larger than the sum of its proper divisors (16918465767567).

20202221222001 is a wasteful number, since it uses less digits than its factorization.

20202221222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246551 (or 4246548 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20202221222001 its reverse (10022212220202), we get a palindrome (30224433442203).

The spelling of 20202221222001 in words is "twenty trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty-two thousand, one".