1321223202011 has 32 divisors (see below), whose sum is σ = 1482535042560. Its totient is φ = 1171358544384.

The previous prime is 1321223202007. The next prime is 1321223202037. The reversal of 1321223202011 is 1102023221231.

It is a cyclic number.

It is not a de Polignac number, because 1321223202011 - 2² = 1321223202007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321223202001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18683426 + ... + 18754008.

It is an arithmetic number, because the mean of its divisors is an integer number (46329220080).

Almost surely, 2^{1321223202011} is an apocalyptic number.

1321223202011 is a deficient number, since it is larger than the sum of its proper divisors (161311840549).

1321223202011 is a wasteful number, since it uses less digits than its factorization.

1321223202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71555.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1321223202011 its reverse (1102023221231), we get a palindrome (2423246423242).

The spelling of 1321223202011 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-three million, two hundred two thousand, eleven".