20132321111 has 32 divisors (see below), whose sum is σ = 24825375360. Its totient is φ = 15933542400.

The previous prime is 20132321089. The next prime is 20132321117. The reversal of 20132321111 is 11112323102.

It is not a de Polignac number, because 20132321111 - 2¹⁴ = 20132304727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20132321111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132321117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2965541 + ... + 2972321.

It is an arithmetic number, because the mean of its divisors is an integer number (775792980).

Almost surely, 2^20132321111 is an apocalyptic number.

20132321111 is a deficient number, since it is larger than the sum of its proper divisors (4693054249).

20132321111 is a wasteful number, since it uses less digits than its factorization.

20132321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20132321111 its reverse (11112323102), we get a palindrome (31244644213).

The spelling of 20132321111 in words is "twenty billion, one hundred thirty-two million, three hundred twenty-one thousand, one hundred eleven".