202201100212212 has 36 divisors (see below), whose sum is σ = 511131933339300. Its totient is φ = 67398720287232.

The previous prime is 202201100212211. The next prime is 202201100212219. The reversal of 202201100212212 is 212212001102202.

It is a happy number.

202201100212212 is a `hidden beast` number, since 20 + 220 + 1 + 1 + 0 + 0 + 212 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57853274425956 + 144347825786256 = 7606134^2 + 12014484^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×202201100212212² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201100212211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67107453 + ... + 70055780.

It is an arithmetic number, because the mean of its divisors is an integer number (14198109259425).

Almost surely, 2^{202201100212212} is an apocalyptic number.

It is an amenable number.

202201100212212 is an abundant number, since it is smaller than the sum of its proper divisors (308930833127088).

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

202201100212212 is a wasteful number, since it uses less digits than its factorization.

202201100212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137204192 (or 137204187 counting only the distinct ones).

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

Adding to 202201100212212 its reverse (212212001102202), we get a palindrome (414413101314414).

The spelling of 202201100212212 in words is "two hundred two trillion, two hundred one billion, one hundred million, two hundred twelve thousand, two hundred twelve".