10021211210 has 16 divisors (see below), whose sum is σ = 18051342696. Its totient is φ = 4005559488.

The previous prime is 10021211209. The next prime is 10021211219. The reversal of 10021211210 is 1211212001.

It can be written as a sum of positive squares in 4 ways, for example, as 9857908369 + 163302841 = 99287^2 + 12779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10021211191 and 10021211200.

It is not an unprimeable number, because it can be changed into a prime (10021211219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351209 + ... + 378668.

Almost surely, 2^10021211210 is an apocalyptic number.

10021211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10021211210 is a deficient number, since it is larger than the sum of its proper divisors (8030131486).

10021211210 is a wasteful number, since it uses less digits than its factorization.

10021211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731257.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10021211210 its reverse (1211212001), we get a palindrome (11232423211).

The spelling of 10021211210 in words is "ten billion, twenty-one million, two hundred eleven thousand, two hundred ten".