201220121111202 has 24 divisors (see below), whose sum is σ = 435978594305436. Its totient is φ = 67073117514336.

The previous prime is 201220121111183. The next prime is 201220121111239. The reversal of 201220121111202 is 202111121022102.

201220121111202 is a `hidden beast` number, since 20 + 1 + 220 + 1 + 211 + 11 + 202 = 666.

201220121111202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127790115016041 + 73430006095161 = 11304429^2 + 8569131^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16475533 + ... + 25959264.

Almost surely, 2^{201220121111202} is an apocalyptic number.

201220121111202 is an abundant number, since it is smaller than the sum of its proper divisors (234758473194234).

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

201220121111202 is a wasteful number, since it uses less digits than its factorization.

201220121111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42698242 (or 42698239 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201220121111202 its reverse (202111121022102), we get a palindrome (403331242133304).

The spelling of 201220121111202 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty-one million, one hundred eleven thousand, two hundred two".