20133111016 has 24 divisors (see below), whose sum is σ = 40100772870. Its totient is φ = 9474404096.

The previous prime is 20133110989. The next prime is 20133111029. The reversal of 20133111016 is 61011133102.

It can be written as a sum of positive squares in 3 ways, for example, as 20009234116 + 123876900 = 141454^2 + 11130^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20133110984 and 20133111002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4351735 + ... + 4356358.

Almost surely, 2^20133111016 is an apocalyptic number.

It is an amenable number.

20133111016 is a deficient number, since it is larger than the sum of its proper divisors (19967661854).

20133111016 is a wasteful number, since it uses less digits than its factorization.

20133111016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708133 (or 8708112 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20133111016 its reverse (61011133102), we get a palindrome (81144244118).

The spelling of 20133111016 in words is "twenty billion, one hundred thirty-three million, one hundred eleven thousand, sixteen".