201121221212202 has 64 divisors (see below), whose sum is σ = 437276520261504. Its totient is φ = 61418948597760.

The previous prime is 201121221212201. The next prime is 201121221212209. The reversal of 201121221212202 is 202212122121102.

It is not an unprimeable number, because it can be changed into a prime (201121221212201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52427413 + ... + 56132664.

It is an arithmetic number, because the mean of its divisors is an integer number (6832445629086).

Almost surely, 2^{201121221212202} is an apocalyptic number.

201121221212202 is an abundant number, since it is smaller than the sum of its proper divisors (236155299049302).

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

201121221212202 is a wasteful number, since it uses less digits than its factorization.

201121221212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108560583.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201121221212202 its reverse (202212122121102), we get a palindrome (403333343333304).

The spelling of 201121221212202 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twelve thousand, two hundred two".