20201120210 has 32 divisors (see below), whose sum is σ = 36463098672. Its totient is φ = 8058019840.

The previous prime is 20201120171. The next prime is 20201120221. The reversal of 20201120210 is 1202110202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3151811881 + 17049308329 = 56141^2 + 130573^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20201120191 and 20201120200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9706370 + ... + 9708450.

Almost surely, 2^20201120210 is an apocalyptic number.

20201120210 is a deficient number, since it is larger than the sum of its proper divisors (16261978462).

20201120210 is a wasteful number, since it uses less digits than its factorization.

20201120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20201120210 its reverse (1202110202), we get a palindrome (21403230412).

The spelling of 20201120210 in words is "twenty billion, two hundred one million, one hundred twenty thousand, two hundred ten".