2201021122212 has 72 divisors (see below), whose sum is σ = 6069861645120. Its totient is φ = 666934432320.

The previous prime is 2201021122193. The next prime is 2201021122241. The reversal of 2201021122212 is 2122211201022.

It is a happy number.

2201021122212 is a `hidden beast` number, since 220 + 1 + 0 + 211 + 22 + 212 = 666.

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, 6496714 + ... + 6827102.

It is an arithmetic number, because the mean of its divisors is an integer number (84303633960).

Almost surely, 2^{2201021122212} is an apocalyptic number.

2201021122212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2201021122212 is an abundant number, since it is smaller than the sum of its proper divisors (3868840522908).

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

2201021122212 is a wasteful number, since it uses less digits than its factorization.

2201021122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347233 (or 347228 counting only the distinct ones).

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

Adding to 2201021122212 its reverse (2122211201022), we get a palindrome (4323232323234).

The spelling of 2201021122212 in words is "two trillion, two hundred one billion, twenty-one million, one hundred twenty-two thousand, two hundred twelve".