20010122201111 has 24 divisors (see below), whose sum is σ = 23357896314480. Its totient is φ = 17091992034432.

The previous prime is 20010122201101. The next prime is 20010122201149. The reversal of 20010122201111 is 11110222101002.

It is not a de Polignac number, because 20010122201111 - 2¹⁴ = 20010122184727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010122201101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346965500 + ... + 347023166.

It is an arithmetic number, because the mean of its divisors is an integer number (973245679770).

Almost surely, 2^{20010122201111} is an apocalyptic number.

20010122201111 is a deficient number, since it is larger than the sum of its proper divisors (3347774113369).

20010122201111 is a wasteful number, since it uses less digits than its factorization.

20010122201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82143 (or 82136 counting only the distinct ones).

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

Adding to 20010122201111 its reverse (11110222101002), we get a palindrome (31120344302113).

The spelling of 20010122201111 in words is "twenty trillion, ten billion, one hundred twenty-two million, two hundred one thousand, one hundred eleven".