21312201010 has 32 divisors (see below), whose sum is σ = 40421874240. Its totient is φ = 8068030272.

The previous prime is 21312200999. The next prime is 21312201017. The reversal of 21312201010 is 1010221312.

It is not an unprimeable number, because it can be changed into a prime (21312201017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133177 + ... + 245683.

It is an arithmetic number, because the mean of its divisors is an integer number (1263183570).

Almost surely, 2^21312201010 is an apocalyptic number.

21312201010 is a deficient number, since it is larger than the sum of its proper divisors (19109673230).

21312201010 is a wasteful number, since it uses less digits than its factorization.

21312201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113530.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21312201010 its reverse (1010221312), we get a palindrome (22322422322).

The spelling of 21312201010 in words is "twenty-one billion, three hundred twelve million, two hundred one thousand, ten".