20100122012111 has 2 divisors, whose sum is σ = 20100122012112. Its totient is φ = 20100122012110.

The previous prime is 20100122012099. The next prime is 20100122012123. The reversal of 20100122012111 is 11121022100102.

It is a balanced prime because it is at equal distance from previous prime (20100122012099) and next prime (20100122012123).

It is a cyclic number.

It is not a de Polignac number, because 20100122012111 - 2²² = 20100117817807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100122612111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050061006055 + 10050061006056.

It is an arithmetic number, because the mean of its divisors is an integer number (10050061006056).

Almost surely, 2^{20100122012111} is an apocalyptic number.

20100122012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100122012111 is an equidigital number, since it uses as much as digits as its factorization.

20100122012111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20100122012111 its reverse (11121022100102), we get a palindrome (31221144112213).

The spelling of 20100122012111 in words is "twenty trillion, one hundred billion, one hundred twenty-two million, twelve thousand, one hundred eleven".