21120210010 has 8 divisors (see below), whose sum is σ = 38016378036. Its totient is φ = 8448084000.

The previous prime is 21120209959. The next prime is 21120210043. The reversal of 21120210010 is 1001202112.

It can be written as a sum of positive squares in 2 ways, for example, as 17236801521 + 3883408489 = 131289^2 + 62317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2112021001 = 21120210010 / (2 + 1 + 1 + 2 + 0 + 2 + 1 + 0 + 0 + 1 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056010491 + ... + 1056010510.

Almost surely, 2^21120210010 is an apocalyptic number.

21120210010 is a deficient number, since it is larger than the sum of its proper divisors (16896168026).

21120210010 is a wasteful number, since it uses less digits than its factorization.

21120210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112021008.

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

Adding to 21120210010 its reverse (1001202112), we get a palindrome (22121412122).

The spelling of 21120210010 in words is "twenty-one billion, one hundred twenty million, two hundred ten thousand, ten".