21101102012222 has 32 divisors (see below), whose sum is σ = 32808385843200. Its totient is φ = 10166444719200.

The previous prime is 21101102012213. The next prime is 21101102012233. The reversal of 21101102012222 is 22221020110112.

It is a super-2 number, since 2×21101102012222² (a number of 27 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 21101102012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58389947 + ... + 58750217.

It is an arithmetic number, because the mean of its divisors is an integer number (1025262057600).

Almost surely, 2^{21101102012222} is an apocalyptic number.

21101102012222 is a deficient number, since it is larger than the sum of its proper divisors (11707283830978).

21101102012222 is a wasteful number, since it uses less digits than its factorization.

21101102012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362312.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21101102012222 its reverse (22221020110112), we get a palindrome (43322122122334).

The spelling of 21101102012222 in words is "twenty-one trillion, one hundred one billion, one hundred two million, twelve thousand, two hundred twenty-two".