21122210000111 has 16 divisors (see below), whose sum is σ = 24398102907648. Its totient is φ = 18072289468800.

The previous prime is 21122210000069. The next prime is 21122210000119. The reversal of 21122210000111 is 11100001222112.

It is a cyclic number.

It is not a de Polignac number, because 21122210000111 - 2¹⁴ = 21122209983727 is a prime.

It is a super-2 number, since 2×21122210000111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122210000119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18999326 + ... + 20080308.

It is an arithmetic number, because the mean of its divisors is an integer number (1524881431728).

Almost surely, 2^{21122210000111} is an apocalyptic number.

21122210000111 is a deficient number, since it is larger than the sum of its proper divisors (3275892907537).

21122210000111 is a wasteful number, since it uses less digits than its factorization.

21122210000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185502.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21122210000111 its reverse (11100001222112), we get a palindrome (32222211222223).

The spelling of 21122210000111 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, one hundred eleven", and thus it is an aban number.