1210000221211 has 16 divisors (see below), whose sum is σ = 1327222231200. Its totient is φ = 1098709049088.

The previous prime is 1210000221193. The next prime is 1210000221223. The reversal of 1210000221211 is 1121220000121.

It is a cyclic number.

It is not a de Polignac number, because 1210000221211 - 2⁷ = 1210000221083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210000221191 and 1210000221200.

It is not an unprimeable number, because it can be changed into a prime (1210000221011) 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, 7939140 + ... + 8090113.

It is an arithmetic number, because the mean of its divisors is an integer number (82951389450).

Almost surely, 2^{1210000221211} is an apocalyptic number.

1210000221211 is a deficient number, since it is larger than the sum of its proper divisors (117222009989).

1210000221211 is a wasteful number, since it uses less digits than its factorization.

1210000221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16029438.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210000221211 its reverse (1121220000121), we get a palindrome (2331220221332).

The spelling of 1210000221211 in words is "one trillion, two hundred ten billion, two hundred twenty-one thousand, two hundred eleven".