1222021011211 has 64 divisors (see below), whose sum is σ = 1726104038400. Its totient is φ = 834281280000.

The previous prime is 1222021011203. The next prime is 1222021011217. The reversal of 1222021011211 is 1121101202221.

It is not a de Polignac number, because 1222021011211 - 2³ = 1222021011203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222021011217) 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 63 ways as a sum of consecutive naturals, for example, 1355961 + ... + 2069461.

It is an arithmetic number, because the mean of its divisors is an integer number (26970375600).

Almost surely, 2^{1222021011211} is an apocalyptic number.

1222021011211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222021011211 is a deficient number, since it is larger than the sum of its proper divisors (504083027189).

1222021011211 is a wasteful number, since it uses less digits than its factorization.

1222021011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713620.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222021011211 its reverse (1121101202221), we get a palindrome (2343122213432).

The spelling of 1222021011211 in words is "one trillion, two hundred twenty-two billion, twenty-one million, eleven thousand, two hundred eleven".