20002211122212 has 120 divisors (see below), whose sum is σ = 57182817273120. Its totient is φ = 6046455911040.

The previous prime is 20002211122211. The next prime is 20002211122217. The reversal of 20002211122212 is 21222111220002.

It is a happy number.

20002211122212 is a `hidden beast` number, since 200 + 0 + 221 + 11 + 22 + 212 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20002211122211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5403318 + ... + 8318669.

It is an arithmetic number, because the mean of its divisors is an integer number (476523477276).

Almost surely, 2^{20002211122212} is an apocalyptic number.

20002211122212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20002211122212 is an abundant number, since it is smaller than the sum of its proper divisors (37180606150908).

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

20002211122212 is a wasteful number, since it uses less digits than its factorization.

20002211122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722423 (or 13722412 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20002211122212 its reverse (21222111220002), we get a palindrome (41224322342214).

The spelling of 20002211122212 in words is "twenty trillion, two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twelve".