1321610101211 has 16 divisors (see below), whose sum is σ = 1349189226720. Its totient is φ = 1294318206720.

The previous prime is 1321610101171. The next prime is 1321610101289. The reversal of 1321610101211 is 1121010161231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321610101211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321610107211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83232605 + ... + 83248481.

It is an arithmetic number, because the mean of its divisors is an integer number (84324326670).

Almost surely, 2^{1321610101211} is an apocalyptic number.

1321610101211 is a deficient number, since it is larger than the sum of its proper divisors (27579125509).

1321610101211 is a wasteful number, since it uses less digits than its factorization.

1321610101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24814.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 1321610101211 its reverse (1121010161231), we get a palindrome (2442620262442).

The spelling of 1321610101211 in words is "one trillion, three hundred twenty-one billion, six hundred ten million, one hundred one thousand, two hundred eleven".