201102001111221 has 32 divisors (see below), whose sum is σ = 328655845232640. Its totient is φ = 106813149678144.

The previous prime is 201102001111199. The next prime is 201102001111223. The reversal of 201102001111221 is 122111100201102.

It is a happy number.

It is not a de Polignac number, because 201102001111221 - 2⁶ = 201102001111157 is a prime.

It is a super-2 number, since 2×201102001111221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201102001111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102001111223) 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, 4754837725 + ... + 4754880018.

It is an arithmetic number, because the mean of its divisors is an integer number (10270495163520).

Almost surely, 2^{201102001111221} is an apocalyptic number.

201102001111221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201102001111221 is a deficient number, since it is larger than the sum of its proper divisors (127553844121419).

201102001111221 is a wasteful number, since it uses less digits than its factorization.

201102001111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509717825.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201102001111221 its reverse (122111100201102), we get a palindrome (323213101312323).

The spelling of 201102001111221 in words is "two hundred one trillion, one hundred two billion, one million, one hundred eleven thousand, two hundred twenty-one".