201121202100222 has 36 divisors (see below), whose sum is σ = 455532552604584. Its totient is φ = 64125600666600.

The previous prime is 201121202100211. The next prime is 201121202100233. The reversal of 201121202100222 is 222001202121102.

It is a happy number.

201121202100222 is a `hidden beast` number, since 2 + 0 + 112 + 120 + 210 + 0 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (201121202100211) and next prime (201121202100233).

It is a super-3 number, since 3×201121202100222³ (a number of 44 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 201121202100195 and 201121202100204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10560860154 + ... + 10560879197.

It is an arithmetic number, because the mean of its divisors is an integer number (12653682016794).

Almost surely, 2^{201121202100222} is an apocalyptic number.

201121202100222 is an abundant number, since it is smaller than the sum of its proper divisors (254411350504362).

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

201121202100222 is a wasteful number, since it uses less digits than its factorization.

201121202100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21121739405 (or 21121739379 counting only the distinct ones).

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

Adding to 201121202100222 its reverse (222001202121102), we get a palindrome (423122404221324).

The spelling of 201121202100222 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred two million, one hundred thousand, two hundred twenty-two".