201102022111221 has 72 divisors (see below), whose sum is σ = 368960896571904. Its totient is φ = 104373348992640.

The previous prime is 201102022111213. The next prime is 201102022111229. The reversal of 201102022111221 is 122111220201102.

201102022111221 is a `hidden beast` number, since 20 + 1 + 10 + 202 + 211 + 1 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (201102022111213) and next prime (201102022111229).

It is not a de Polignac number, because 201102022111221 - 2³ = 201102022111213 is a prime.

It is a super-2 number, since 2×201102022111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201102022111194 and 201102022111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102022111229) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13573525 + ... + 24216618.

It is an arithmetic number, because the mean of its divisors is an integer number (5124456896832).

Almost surely, 2^{201102022111221} is an apocalyptic number.

201102022111221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201102022111221 is a deficient number, since it is larger than the sum of its proper divisors (167858874460683).

201102022111221 is a wasteful number, since it uses less digits than its factorization.

201102022111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37791271 (or 37791261 counting only the distinct ones).

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

Adding to 201102022111221 its reverse (122111220201102), we get a palindrome (323213242312323).

The spelling of 201102022111221 in words is "two hundred one trillion, one hundred two billion, twenty-two million, one hundred eleven thousand, two hundred twenty-one".