20121022211 has 8 divisors (see below), whose sum is σ = 21211507920. Its totient is φ = 19033684992.

The previous prime is 20121022171. The next prime is 20121022213. The reversal of 20121022211 is 11222012102.

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 20121022211 - 2¹⁸ = 20120760067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121022213) 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, 773990 + ... + 799563.

It is an arithmetic number, because the mean of its divisors is an integer number (2651438490).

Almost surely, 2^20121022211 is an apocalyptic number.

20121022211 is a deficient number, since it is larger than the sum of its proper divisors (1090485709).

20121022211 is a wasteful number, since it uses less digits than its factorization.

20121022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574245.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121022211 its reverse (11222012102), we get a palindrome (31343034313).

The spelling of 20121022211 in words is "twenty billion, one hundred twenty-one million, twenty-two thousand, two hundred eleven".