201221022102 has 8 divisors (see below), whose sum is σ = 402442044216. Its totient is φ = 67073674032.

The previous prime is 201221022097. The next prime is 201221022131. The reversal of 201221022102 is 201220122102.

It is a sphenic number, since it is the product of 3 distinct primes.

201221022102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16768418503 + ... + 16768418514.

It is an arithmetic number, because the mean of its divisors is an integer number (50305255527).

Almost surely, 2^201221022102 is an apocalyptic number.

201221022102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

201221022102 is a wasteful number, since it uses less digits than its factorization.

201221022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33536837022.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201221022102 its reverse (201220122102), we get a palindrome (402441144204).

It can be divided in two parts, 2012 and 21022102, that multiplied together give a palindrome (42296469224).

The spelling of 201221022102 in words is "two hundred one billion, two hundred twenty-one million, twenty-two thousand, one hundred two".