1222021211021 has 16 divisors (see below), whose sum is σ = 1371795384960. Its totient is φ = 1080808397760.

The previous prime is 1222021210987. The next prime is 1222021211041. The reversal of 1222021211021 is 1201121202221.

It is not a de Polignac number, because 1222021211021 - 2²⁶ = 1221954102157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222021211041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12322505 + ... + 12421278.

It is an arithmetic number, because the mean of its divisors is an integer number (85737211560).

Almost surely, 2^{1222021211021} is an apocalyptic number.

It is an amenable number.

1222021211021 is a deficient number, since it is larger than the sum of its proper divisors (149774173939).

1222021211021 is a wasteful number, since it uses less digits than its factorization.

1222021211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24743956.

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

Adding to 1222021211021 its reverse (1201121202221), we get a palindrome (2423142413242).

The spelling of 1222021211021 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, twenty-one".