1210211002321 has 16 divisors (see below), whose sum is σ = 1253004318720. Its totient is φ = 1167654133440.

The previous prime is 1210211002307. The next prime is 1210211002349. The reversal of 1210211002321 is 1232001120121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210211002321 is a prime.

It is a super-2 number, since 2×1210211002321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210211002295 and 1210211002304.

It is not an unprimeable number, because it can be changed into a prime (1210211002921) 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, 47281395 + ... + 47306983.

It is an arithmetic number, because the mean of its divisors is an integer number (78312769920).

Almost surely, 2^{1210211002321} is an apocalyptic number.

It is an amenable number.

1210211002321 is a deficient number, since it is larger than the sum of its proper divisors (42793316399).

1210211002321 is a wasteful number, since it uses less digits than its factorization.

1210211002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30144.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1210211002321 its reverse (1232001120121), we get a palindrome (2442212122442).

The spelling of 1210211002321 in words is "one trillion, two hundred ten billion, two hundred eleven million, two thousand, three hundred twenty-one".