1321000013210 has 32 divisors (see below), whose sum is σ = 2519576924112. Its totient is φ = 496941096960.

The previous prime is 1321000013191. The next prime is 1321000013233. The reversal of 1321000013210 is 123100001231.

It can be written as a sum of positive squares in 8 ways, for example, as 1201034070889 + 119965942321 = 1095917^2 + 346361^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2716607 + ... + 3165746.

Almost surely, 2^{1321000013210} is an apocalyptic number.

1321000013210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321000013210 is a deficient number, since it is larger than the sum of its proper divisors (1198576910902).

1321000013210 is a wasteful number, since it uses less digits than its factorization.

1321000013210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883698.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1321000013210 its reverse (123100001231), we get a palindrome (1444100014441).

The spelling of 1321000013210 in words is "one trillion, three hundred twenty-one billion, thirteen thousand, two hundred ten".