20111132013 has 16 divisors (see below), whose sum is σ = 31223753856. Its totient is φ = 11275243200.

The previous prime is 20111132003. The next prime is 20111132021. The reversal of 20111132013 is 31023111102.

It is a happy number.

It is not a de Polignac number, because 20111132013 - 2⁵ = 20111131981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111131983 and 20111132001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111132003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9033538 + ... + 9035763.

It is an arithmetic number, because the mean of its divisors is an integer number (1951484616).

Almost surely, 2^20111132013 is an apocalyptic number.

It is an amenable number.

20111132013 is a deficient number, since it is larger than the sum of its proper divisors (11112621843).

20111132013 is a wasteful number, since it uses less digits than its factorization.

20111132013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069364.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20111132013 its reverse (31023111102), we get a palindrome (51134243115).

The spelling of 20111132013 in words is "twenty billion, one hundred eleven million, one hundred thirty-two thousand, thirteen".