20001210210 has 48 divisors (see below), whose sum is σ = 52066680120. Its totient is φ = 5327139840.

The previous prime is 20001210191. The next prime is 20001210239. The reversal of 20001210210 is 1201210002.

It can be written as a sum of positive squares in 4 ways, for example, as 19036548729 + 964661481 = 137973^2 + 31059^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001210192 and 20001210201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61455 + ... + 209234.

Almost surely, 2^20001210210 is an apocalyptic number.

20001210210 is an abundant number, since it is smaller than the sum of its proper divisors (32065469910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001210210 is a wasteful number, since it uses less digits than its factorization.

20001210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271523 (or 271520 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20001210210 its reverse (1201210002), we get a palindrome (21202420212).

The spelling of 20001210210 in words is "twenty billion, one million, two hundred ten thousand, two hundred ten".