20120220211 has 12 divisors (see below), whose sum is σ = 25205551392. Its totient is φ = 15919294608.

The previous prime is 20120220203. The next prime is 20120220217. The reversal of 20120220211 is 11202202102.

It is a happy number.

It is not a de Polignac number, because 20120220211 - 2³ = 20120220203 is a prime.

It is a super-2 number, since 2×20120220211² (a number of 21 digits) contains 22 as substring.

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 = 20120220191 and 20120220200.

It is not an unprimeable number, because it can be changed into a prime (20120220217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15792315 + ... + 15793588.

It is an arithmetic number, because the mean of its divisors is an integer number (2100462616).

Almost surely, 2^20120220211 is an apocalyptic number.

20120220211 is a deficient number, since it is larger than the sum of its proper divisors (5085331181).

20120220211 is a wasteful number, since it uses less digits than its factorization.

20120220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31585930 (or 31585923 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20120220211 its reverse (11202202102), we get a palindrome (31322422313).

The spelling of 20120220211 in words is "twenty billion, one hundred twenty million, two hundred twenty thousand, two hundred eleven".