21102211211022 has 48 divisors (see below), whose sum is σ = 47422988401152. Its totient is φ = 7032862308600.

The previous prime is 21102211211021. The next prime is 21102211211063. The reversal of 21102211211022 is 22011211220112.

21102211211022 is a `hidden beast` number, since 211 + 0 + 221 + 1 + 211 + 0 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21102211210986 and 21102211211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102211211021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 893854 + ... + 6557697.

It is an arithmetic number, because the mean of its divisors is an integer number (987978925024).

Almost surely, 2^{21102211211022} is an apocalyptic number.

21102211211022 is an abundant number, since it is smaller than the sum of its proper divisors (26320777190130).

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

21102211211022 is an equidigital number, since it uses as much as digits as its factorization.

21102211211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7457395 (or 7457383 counting only the distinct ones).

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

Adding to 21102211211022 its reverse (22011211220112), we get a palindrome (43113422431134).

The spelling of 21102211211022 in words is "twenty-one trillion, one hundred two billion, two hundred eleven million, two hundred eleven thousand, twenty-two".