20010102201111 has 64 divisors (see below), whose sum is σ = 30082724315136. Its totient is φ = 11724412521600.

The previous prime is 20010102201083. The next prime is 20010102201113. The reversal of 20010102201111 is 11110220101002.

It is not a de Polignac number, because 20010102201111 - 2³¹ = 20007954717463 is a prime.

20010102201111 is a modest number, since divided by 2201111 gives 200101 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010102201113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1099991026 + ... + 1100009216.

It is an arithmetic number, because the mean of its divisors is an integer number (470042567424).

Almost surely, 2^{20010102201111} is an apocalyptic number.

20010102201111 is a deficient number, since it is larger than the sum of its proper divisors (10072622114025).

20010102201111 is a wasteful number, since it uses less digits than its factorization.

20010102201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23932.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20010102201111 its reverse (11110220101002), we get a palindrome (31120322302113).

The spelling of 20010102201111 in words is "twenty trillion, ten billion, one hundred two million, two hundred one thousand, one hundred eleven".