210102011010 has 48 divisors (see below), whose sum is σ = 561029162616. Its totient is φ = 54512953344.

The previous prime is 210102010919. The next prime is 210102011023. The reversal of 210102011010 is 10110201012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 158509885689 + 51592125321 = 398133^2 + 227139^2 .

It is a super-2 number, since 2×210102011010² (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 = 210102010983 and 210102011001.

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, 31543519 + ... + 31550178.

Almost surely, 2^210102011010 is an apocalyptic number.

210102011010 is an abundant number, since it is smaller than the sum of its proper divisors (350927151606).

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

210102011010 is a wasteful number, since it uses less digits than its factorization.

210102011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63093747 (or 63093744 counting only the distinct ones).

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

Adding to 210102011010 its reverse (10110201012), we get a palindrome (220212212022).

The spelling of 210102011010 in words is "two hundred ten billion, one hundred two million, eleven thousand, ten".