21211110010222 has 16 divisors (see below), whose sum is σ = 34709190303744. Its totient is φ = 9641385531000.

The previous prime is 21211110010219. The next prime is 21211110010229. The reversal of 21211110010222 is 22201001111212.

It is a super-2 number, since 2×21211110010222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21211110010196 and 21211110010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211110010229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7591597 + ... + 10002727.

It is an arithmetic number, because the mean of its divisors is an integer number (2169324393984).

Almost surely, 2^{21211110010222} is an apocalyptic number.

21211110010222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21211110010222 is a deficient number, since it is larger than the sum of its proper divisors (13498080293522).

21211110010222 is a wasteful number, since it uses less digits than its factorization.

21211110010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811015.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21211110010222 its reverse (22201001111212), we get a palindrome (43412111121434).

The spelling of 21211110010222 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, ten thousand, two hundred twenty-two".