201220211122002 has 64 divisors (see below), whose sum is σ = 447717810153600. Its totient is φ = 66989142175680.

The previous prime is 201220211121983. The next prime is 201220211122003. The reversal of 201220211122002 is 200221112022102.

It is a happy number.

201220211122002 is a `hidden beast` number, since 20 + 1 + 220 + 211 + 12 + 200 + 2 = 666.

201220211122002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×201220211122002³ (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 not an unprimeable number, because it can be changed into a prime (201220211122003) 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, 1419902833 + ... + 1420044539.

It is an arithmetic number, because the mean of its divisors is an integer number (6995590783650).

Almost surely, 2^{201220211122002} is an apocalyptic number.

201220211122002 is an abundant number, since it is smaller than the sum of its proper divisors (246497599031598).

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

201220211122002 is a wasteful number, since it uses less digits than its factorization.

201220211122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174568 (or 174562 counting only the distinct ones).

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

Adding to 201220211122002 its reverse (200221112022102), we get a palindrome (401441323144104).

The spelling of 201220211122002 in words is "two hundred one trillion, two hundred twenty billion, two hundred eleven million, one hundred twenty-two thousand, two".