20122112211 has 16 divisors (see below), whose sum is σ = 27294716928. Its totient is φ = 13183077600.

The previous prime is 20122112207. The next prime is 20122112249. The reversal of 20122112211 is 11221122102.

It is not a de Polignac number, because 20122112211 - 2² = 20122112207 is a prime.

20122112211 is a modest number, since divided by 22112211 gives 201 as remainder.

It is not an unprimeable number, because it can be changed into a prime (20122112111) 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 15 ways as a sum of consecutive naturals, for example, 34275 + ... + 203516.

It is an arithmetic number, because the mean of its divisors is an integer number (1705919808).

Almost surely, 2^20122112211 is an apocalyptic number.

20122112211 is a deficient number, since it is larger than the sum of its proper divisors (7172604717).

20122112211 is a wasteful number, since it uses less digits than its factorization.

20122112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238282.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20122112211 its reverse (11221122102), we get a palindrome (31343234313).

The spelling of 20122112211 in words is "twenty billion, one hundred twenty-two million, one hundred twelve thousand, two hundred eleven".