210101021010 has 48 divisors (see below), whose sum is σ = 553956511680. Its totient is φ = 55237825440.

The previous prime is 210101021003. The next prime is 210101021033. The reversal of 210101021010 is 10120101012.

It is a happy number.

It is a super-2 number, since 2×210101021010² (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 = 210101020983 and 210101021001.

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, 16433440 + ... + 16446219.

It is an arithmetic number, because the mean of its divisors is an integer number (11540760660).

Almost surely, 2^210101021010 is an apocalyptic number.

210101021010 is an abundant number, since it is smaller than the sum of its proper divisors (343855490670).

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

210101021010 is a wasteful number, since it uses less digits than its factorization.

210101021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32879743 (or 32879740 counting only the distinct ones).

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

Adding to 210101021010 its reverse (10120101012), we get a palindrome (220221122022).

The spelling of 210101021010 in words is "two hundred ten billion, one hundred one million, twenty-one thousand, ten".