20121022022111 has 16 divisors (see below), whose sum is σ = 20677259651136. Its totient is φ = 19565441001216.

The previous prime is 20121022022071. The next prime is 20121022022113. The reversal of 20121022022111 is 11122022012102.

It is a cyclic number.

It is not a de Polignac number, because 20121022022111 - 2⁶ = 20121022022047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20121022022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121022022113) 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, 885324230 + ... + 885346956.

It is an arithmetic number, because the mean of its divisors is an integer number (1292328728196).

Almost surely, 2^{20121022022111} is an apocalyptic number.

20121022022111 is a deficient number, since it is larger than the sum of its proper divisors (556237629025).

20121022022111 is a wasteful number, since it uses less digits than its factorization.

20121022022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36098.

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

Adding to 20121022022111 its reverse (11122022012102), we get a palindrome (31243044034213).

The spelling of 20121022022111 in words is "twenty trillion, one hundred twenty-one billion, twenty-two million, twenty-two thousand, one hundred eleven".