1222210211021 has 4 divisors (see below), whose sum is σ = 1222212475392. Its totient is φ = 1222207946652.

The previous prime is 1222210210967. The next prime is 1222210211051. The reversal of 1222210211021 is 1201120122221.

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 1222210211021 - 2⁶ = 1222210210957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222210211051) 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, 199796 + ... + 1576178.

It is an arithmetic number, because the mean of its divisors is an integer number (305553118848).

Almost surely, 2^{1222210211021} is an apocalyptic number.

It is an amenable number.

1222210211021 is a deficient number, since it is larger than the sum of its proper divisors (2264371).

1222210211021 is an equidigital number, since it uses as much as digits as its factorization.

1222210211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264370.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222210211021 its reverse (1201120122221), we get a palindrome (2423330333242).

The spelling of 1222210211021 in words is "one trillion, two hundred twenty-two billion, two hundred ten million, two hundred eleven thousand, twenty-one".