10221212121011 has 4 divisors (see below), whose sum is σ = 10414065179952. Its totient is φ = 10028359062072.

The previous prime is 10221212120971. The next prime is 10221212121031. The reversal of 10221212121011 is 11012121212201.

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-10221212121011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221212121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96426529391 + ... + 96426529496.

It is an arithmetic number, because the mean of its divisors is an integer number (2603516294988).

Almost surely, 2^{10221212121011} is an apocalyptic number.

10221212121011 is a deficient number, since it is larger than the sum of its proper divisors (192853058941).

10221212121011 is an equidigital number, since it uses as much as digits as its factorization.

10221212121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192853058940.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10221212121011 its reverse (11012121212201), we get a palindrome (21233333333212).

The spelling of 10221212121011 in words is "ten trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, eleven".