20120102211 has 32 divisors (see below), whose sum is σ = 29813702400. Its totient is φ = 11966993280.

The previous prime is 20120102209. The next prime is 20120102213. The reversal of 20120102211 is 11220102102.

It is an interprime number because it is at equal distance from previous prime (20120102209) and next prime (20120102213).

It is not a de Polignac number, because 20120102211 - 2¹ = 20120102209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120102213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 577845 + ... + 611673.

It is an arithmetic number, because the mean of its divisors is an integer number (931678200).

Almost surely, 2^20120102211 is an apocalyptic number.

20120102211 is a deficient number, since it is larger than the sum of its proper divisors (9693600189).

20120102211 is a wasteful number, since it uses less digits than its factorization.

20120102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34179.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20120102211 its reverse (11220102102), we get a palindrome (31340204313).

The spelling of 20120102211 in words is "twenty billion, one hundred twenty million, one hundred two thousand, two hundred eleven".