2210211133221 has 64 divisors (see below), whose sum is σ = 3886999216128. Its totient is φ = 1084998613248.

The previous prime is 2210211133213. The next prime is 2210211133279. The reversal of 2210211133221 is 1223311120122.

It is not a de Polignac number, because 2210211133221 - 2³ = 2210211133213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210211135221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4524441 + ... + 4989086.

It is an arithmetic number, because the mean of its divisors is an integer number (60734362752).

Almost surely, 2^{2210211133221} is an apocalyptic number.

2210211133221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2210211133221 is a deficient number, since it is larger than the sum of its proper divisors (1676788082907).

2210211133221 is a wasteful number, since it uses less digits than its factorization.

2210211133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9513610.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2210211133221 its reverse (1223311120122), we get a palindrome (3433522253343).

It can be divided in two parts, 2210211 and 133221, that added together give a palindrome (2343432).

The spelling of 2210211133221 in words is "two trillion, two hundred ten billion, two hundred eleven million, one hundred thirty-three thousand, two hundred twenty-one".