20002211122111 has 2 divisors, whose sum is σ = 20002211122112. Its totient is φ = 20002211122110.

The previous prime is 20002211122093. The next prime is 20002211122139. The reversal of 20002211122111 is 11122111220002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002211122111 - 2¹³ = 20002211113919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002211122171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001105561055 + 10001105561056.

It is an arithmetic number, because the mean of its divisors is an integer number (10001105561056).

Almost surely, 2^{20002211122111} is an apocalyptic number.

20002211122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002211122111 is an equidigital number, since it uses as much as digits as its factorization.

20002211122111 is an evil number, because the sum of its binary digits is even.

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

Adding to 20002211122111 its reverse (11122111220002), we get a palindrome (31124322342113).

The spelling of 20002211122111 in words is "twenty trillion, two billion, two hundred eleven million, one hundred twenty-two thousand, one hundred eleven".