22021022221111 has 16 divisors (see below), whose sum is σ = 22252673086560. Its totient is φ = 21790800783360.

The previous prime is 22021022221097. The next prime is 22021022221183. The reversal of 22021022221111 is 11112222012022.

It is a cyclic number.

It is not a de Polignac number, because 22021022221111 - 2¹⁵ = 22021022188343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021022227111) 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, 34984891 + ... + 35608771.

It is an arithmetic number, because the mean of its divisors is an integer number (1390792067910).

Almost surely, 2^{22021022221111} is an apocalyptic number.

22021022221111 is a deficient number, since it is larger than the sum of its proper divisors (231650865449).

22021022221111 is a wasteful number, since it uses less digits than its factorization.

22021022221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625026.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22021022221111 its reverse (11112222012022), we get a palindrome (33133244233133).

The spelling of 22021022221111 in words is "twenty-two trillion, twenty-one billion, twenty-two million, two hundred twenty-one thousand, one hundred eleven".