20021201222202 has 48 divisors (see below), whose sum is σ = 44553278911752. Its totient is φ = 6493129810560.

The previous prime is 20021201222161. The next prime is 20021201222237. The reversal of 20021201222202 is 20222210212002.

20021201222202 is a `hidden beast` number, since 20 + 0 + 21 + 201 + 222 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18290684651121 + 1730516571081 = 4276761^2 + 1315491^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18563788 + ... + 19612664.

Almost surely, 2^{20021201222202} is an apocalyptic number.

20021201222202 is an abundant number, since it is smaller than the sum of its proper divisors (24532077689550).

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

20021201222202 is a wasteful number, since it uses less digits than its factorization.

20021201222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077583 (or 1077580 counting only the distinct ones).

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

Adding to 20021201222202 its reverse (20222210212002), we get a palindrome (40243411434204).

The spelling of 20021201222202 in words is "twenty trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, two hundred two".