20013222031111 has 4 divisors (see below), whose sum is σ = 20016632025400. Its totient is φ = 20009812036824.

The previous prime is 20013222031097. The next prime is 20013222031129. The reversal of 20013222031111 is 11113022231002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20013222031111 - 2¹¹ = 20013222029063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013222031151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704988341 + ... + 1705000078.

It is an arithmetic number, because the mean of its divisors is an integer number (5004158006350).

Almost surely, 2^{20013222031111} is an apocalyptic number.

20013222031111 is a deficient number, since it is larger than the sum of its proper divisors (3409994289).

20013222031111 is an equidigital number, since it uses as much as digits as its factorization.

20013222031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409994288.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20013222031111 its reverse (11113022231002), we get a palindrome (31126244262113).

The spelling of 20013222031111 in words is "twenty trillion, thirteen billion, two hundred twenty-two million, thirty-one thousand, one hundred eleven".