20002111311 has 64 divisors (see below), whose sum is σ = 35694425088. Its totient is φ = 9661483008.

The previous prime is 20002111309. The next prime is 20002111321. The reversal of 20002111311 is 11311120002.

It is not a de Polignac number, because 20002111311 - 2¹ = 20002111309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002111321) 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, 113476 + ... + 229958.

It is an arithmetic number, because the mean of its divisors is an integer number (557725392).

Almost surely, 2^20002111311 is an apocalyptic number.

20002111311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20002111311 is a deficient number, since it is larger than the sum of its proper divisors (15692313777).

20002111311 is a wasteful number, since it uses less digits than its factorization.

20002111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116560.

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

Adding to 20002111311 its reverse (11311120002), we get a palindrome (31313231313).

The spelling of 20002111311 in words is "twenty billion, two million, one hundred eleven thousand, three hundred eleven".