21023331331210 has 32 divisors (see below), whose sum is σ = 41746892845392. Its totient is φ = 7573132485120.

The previous prime is 21023331331199. The next prime is 21023331331267. The reversal of 21023331331210 is 1213313332012.

It can be written as a sum of positive squares in 8 ways, for example, as 452852281249 + 20570479049961 = 672943^2 + 4535469^2 .

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 15 ways as a sum of consecutive naturals, for example, 1972164589 + ... + 1972175248.

Almost surely, 2^{21023331331210} is an apocalyptic number.

21023331331210 is a deficient number, since it is larger than the sum of its proper divisors (20723561514182).

21023331331210 is a wasteful number, since it uses less digits than its factorization.

21023331331210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944339898.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21023331331210 its reverse (1213313332012), we get a palindrome (22236644663222).

The spelling of 21023331331210 in words is "twenty-one trillion, twenty-three billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred ten".