20012000010111 has 48 divisors (see below), whose sum is σ = 30803764343040. Its totient is φ = 12475703358720.

The previous prime is 20012000010089. The next prime is 20012000010181. The reversal of 20012000010111 is 11101000021002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20012000010111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20012000010093 and 20012000010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012000010181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82651656 + ... + 82893426.

It is an arithmetic number, because the mean of its divisors is an integer number (641745090480).

Almost surely, 2^{20012000010111} is an apocalyptic number.

20012000010111 is a deficient number, since it is larger than the sum of its proper divisors (10791764332929).

20012000010111 is a wasteful number, since it uses less digits than its factorization.

20012000010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245276 (or 245273 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20012000010111 its reverse (11101000021002), we get a palindrome (31113000031113).

The spelling of 20012000010111 in words is "twenty trillion, twelve billion, ten thousand, one hundred eleven".