20012232111 has 8 divisors (see below), whose sum is σ = 26689145904. Its totient is φ = 13338403200.

The previous prime is 20012232089. The next prime is 20012232113. The reversal of 20012232111 is 11123221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20012232111 - 2¹³ = 20012223919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012232113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756040 + ... + 782061.

It is an arithmetic number, because the mean of its divisors is an integer number (3336143238).

Almost surely, 2^20012232111 is an apocalyptic number.

20012232111 is a deficient number, since it is larger than the sum of its proper divisors (6676913793).

20012232111 is a wasteful number, since it uses less digits than its factorization.

20012232111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542441.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20012232111 its reverse (11123221002), we get a palindrome (31135453113).

The spelling of 20012232111 in words is "twenty billion, twelve million, two hundred thirty-two thousand, one hundred eleven".