1021320012010 has 16 divisors (see below), whose sum is σ = 1838399797800. Its totient is φ = 408522721216.

The previous prime is 1021320012001. The next prime is 1021320012067. The reversal of 1021320012010 is 102100231201.

It can be written as a sum of positive squares in 4 ways, for example, as 999354104329 + 21965907681 = 999677^2 + 148209^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205476 + ... + 1443904.

Almost surely, 2^{1021320012010} is an apocalyptic number.

1021320012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021320012010 is a deficient number, since it is larger than the sum of its proper divisors (817079785790).

1021320012010 is a wasteful number, since it uses less digits than its factorization.

1021320012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320905.

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

Adding to 1021320012010 its reverse (102100231201), we get a palindrome (1123420243211).

The spelling of 1021320012010 in words is "one trillion, twenty-one billion, three hundred twenty million, twelve thousand, ten".