210100221010 has 32 divisors (see below), whose sum is σ = 401499953712. Its totient is φ = 78884474880.

The previous prime is 210100220999. The next prime is 210100221017. The reversal of 210100221010 is 10122001012.

It can be written as a sum of positive squares in 8 ways, for example, as 190407431449 + 19692789561 = 436357^2 + 140331^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (210100221017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593271 + ... + 1720090.

Almost surely, 2^210100221010 is an apocalyptic number.

210100221010 is a deficient number, since it is larger than the sum of its proper divisors (191399732702).

210100221010 is a wasteful number, since it uses less digits than its factorization.

210100221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313758.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210100221010 its reverse (10122001012), we get a palindrome (220222222022).

The spelling of 210100221010 in words is "two hundred ten billion, one hundred million, two hundred twenty-one thousand, ten".