10221220221211 has 4 divisors (see below), whose sum is σ = 10221296298624. Its totient is φ = 10221144143800.

The previous prime is 10221220221143. The next prime is 10221220221259. The reversal of 10221220221211 is 11212202212201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221220221211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221220221281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37836820 + ... + 38106001.

It is an arithmetic number, because the mean of its divisors is an integer number (2555324074656).

Almost surely, 2^{10221220221211} is an apocalyptic number.

10221220221211 is a deficient number, since it is larger than the sum of its proper divisors (76077413).

10221220221211 is an equidigital number, since it uses as much as digits as its factorization.

10221220221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76077412.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10221220221211 its reverse (11212202212201), we get a palindrome (21433422433412).

The spelling of 10221220221211 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred eleven".