201212200222100 has 18 divisors (see below), whose sum is σ = 436630474482174. Its totient is φ = 80484880088800.

The previous prime is 201212200222087. The next prime is 201212200222129. The reversal of 201212200222100 is 1222002212102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3253997485456 + 197958202736644 = 1803884^2 + 14069762^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006061001011 + ... + 1006061001210.

It is an arithmetic number, because the mean of its divisors is an integer number (24257248582343).

Almost surely, 2^{201212200222100} is an apocalyptic number.

201212200222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212200222100 is an abundant number, since it is smaller than the sum of its proper divisors (235418274260074).

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

201212200222100 is a wasteful number, since it uses less digits than its factorization.

201212200222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012122002235 (or 2012122002228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201212200222100 its reverse (1222002212102), we get a palindrome (202434202434202).

The spelling of 201212200222100 in words is "two hundred one trillion, two hundred twelve billion, two hundred million, two hundred twenty-two thousand, one hundred".