20012112211 has 8 divisors (see below), whose sum is σ = 24630292064. Its totient is φ = 15833759040.

The previous prime is 20012112209. The next prime is 20012112223. The reversal of 20012112211 is 11221121002.

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

It is a cyclic number.

It is not a de Polignac number, because 20012112211 - 2¹ = 20012112209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20012112191 and 20012112200.

It is not an unprimeable number, because it can be changed into a prime (20012112511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109956570 + ... + 109956751.

It is an arithmetic number, because the mean of its divisors is an integer number (3078786508).

Almost surely, 2^20012112211 is an apocalyptic number.

20012112211 is a deficient number, since it is larger than the sum of its proper divisors (4618179853).

20012112211 is a wasteful number, since it uses less digits than its factorization.

20012112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219913341.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20012112211 its reverse (11221121002), we get a palindrome (31233233213).

The spelling of 20012112211 in words is "twenty billion, twelve million, one hundred twelve thousand, two hundred eleven".