1222313002021 has 4 divisors (see below), whose sum is σ = 1222318199200. Its totient is φ = 1222307804844.

The previous prime is 1222313001979. The next prime is 1222313002039. The reversal of 1222313002021 is 1202003132221.

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 not a de Polignac number, because 1222313002021 - 2²⁵ = 1222279447589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222313002021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222310002021) 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, 2228211 + ... + 2722048.

It is an arithmetic number, because the mean of its divisors is an integer number (305579549800).

Almost surely, 2^{1222313002021} is an apocalyptic number.

It is an amenable number.

1222313002021 is a deficient number, since it is larger than the sum of its proper divisors (5197179).

1222313002021 is an equidigital number, since it uses as much as digits as its factorization.

1222313002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197178.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1222313002021 its reverse (1202003132221), we get a palindrome (2424316134242).

The spelling of 1222313002021 in words is "one trillion, two hundred twenty-two billion, three hundred thirteen million, two thousand, twenty-one".