1021223131011 has 12 divisors (see below), whose sum is σ = 1561870671192. Its totient is φ = 640767454656.

The previous prime is 1021223131003. The next prime is 1021223131037. The reversal of 1021223131011 is 1101313221201.

1021223131011 is a `hidden beast` number, since 102 + 12 + 231 + 310 + 11 = 666.

It is not a de Polignac number, because 1021223131011 - 2³ = 1021223131003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021223135011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3337330341 + ... + 3337330646.

It is an arithmetic number, because the mean of its divisors is an integer number (130155889266).

Almost surely, 2^{1021223131011} is an apocalyptic number.

1021223131011 is a deficient number, since it is larger than the sum of its proper divisors (540647540181).

1021223131011 is a wasteful number, since it uses less digits than its factorization.

1021223131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674661010 (or 6674661007 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1021223131011 its reverse (1101313221201), we get a palindrome (2122536352212).

The spelling of 1021223131011 in words is "one trillion, twenty-one billion, two hundred twenty-three million, one hundred thirty-one thousand, eleven".