201211210221102 has 64 divisors (see below), whose sum is σ = 468261112642560. Its totient is φ = 63922694834592.

The previous prime is 201211210221019. The next prime is 201211210221113. The reversal of 201211210221102 is 201122012112102.

201211210221102 is a `hidden beast` number, since 20 + 1 + 211 + 210 + 221 + 1 + 0 + 2 = 666.

201211210221102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201211210221102² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292085218 + ... + 292773285.

It is an arithmetic number, because the mean of its divisors is an integer number (7316579885040).

Almost surely, 2^{201211210221102} is an apocalyptic number.

201211210221102 is an abundant number, since it is smaller than the sum of its proper divisors (267049902421458).

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

201211210221102 is a wasteful number, since it uses less digits than its factorization.

201211210221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584858814 (or 584858808 counting only the distinct ones).

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

Adding to 201211210221102 its reverse (201122012112102), we get a palindrome (402333222333204).

The spelling of 201211210221102 in words is "two hundred one trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, one hundred two".