210101210010 has 48 divisors (see below), whose sum is σ = 547598848680. Its totient is φ = 55889994240.

The previous prime is 210101210003. The next prime is 210101210021. The reversal of 210101210010 is 10012101012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 204467656761 + 5633553249 = 452181^2 + 75057^2 .

It is a super-2 number, since 2×210101210010² (a number of 23 digits) contains 22 as substring.

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 = 210101209974 and 210101210001.

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, 2817051 + ... + 2890670.

Almost surely, 2^210101210010 is an apocalyptic number.

210101210010 is an abundant number, since it is smaller than the sum of its proper divisors (337497638670).

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

210101210010 is a wasteful number, since it uses less digits than its factorization.

210101210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708143 (or 5708140 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210101210010 its reverse (10012101012), we get a palindrome (220113311022).

The spelling of 210101210010 in words is "two hundred ten billion, one hundred one million, two hundred ten thousand, ten".