1222020110021 has 4 divisors (see below), whose sum is σ = 1223310522912. Its totient is φ = 1220729697132.

The previous prime is 1222020109997. The next prime is 1222020110033. The reversal of 1222020110021 is 1200110202221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222020110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222020109978 and 1222020110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222020110821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645205025 + ... + 645206918.

It is an arithmetic number, because the mean of its divisors is an integer number (305827630728).

Almost surely, 2^{1222020110021} is an apocalyptic number.

It is an amenable number.

1222020110021 is a deficient number, since it is larger than the sum of its proper divisors (1290412891).

1222020110021 is an equidigital number, since it uses as much as digits as its factorization.

1222020110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290412890.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222020110021 its reverse (1200110202221), we get a palindrome (2422130312242).

The spelling of 1222020110021 in words is "one trillion, two hundred twenty-two billion, twenty million, one hundred ten thousand, twenty-one".