20211012022111 has 2 divisors, whose sum is σ = 20211012022112. Its totient is φ = 20211012022110.

The previous prime is 20211012022099. The next prime is 20211012022129. The reversal of 20211012022111 is 11122021011202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211012022111 - 2⁵ = 20211012022079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211012022171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105506011055 + 10105506011056.

It is an arithmetic number, because the mean of its divisors is an integer number (10105506011056).

Almost surely, 2^{20211012022111} is an apocalyptic number.

20211012022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211012022111 is an equidigital number, since it uses as much as digits as its factorization.

20211012022111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20211012022111 its reverse (11122021011202), we get a palindrome (31333033033313).

The spelling of 20211012022111 in words is "twenty trillion, two hundred eleven billion, twelve million, twenty-two thousand, one hundred eleven".