1211320022131 has 2 divisors, whose sum is σ = 1211320022132. Its totient is φ = 1211320022130.

The previous prime is 1211320022111. The next prime is 1211320022279. The reversal of 1211320022131 is 1312200231121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211320022131 - 2¹⁷ = 1211319891059 is a prime.

It is a super-2 number, since 2×1211320022131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211320022099 and 1211320022108.

It is not a weakly prime, because it can be changed into another prime (1211320022111) 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 as a sum of consecutive naturals, namely, 605660011065 + 605660011066.

It is an arithmetic number, because the mean of its divisors is an integer number (605660011066).

Almost surely, 2^{1211320022131} is an apocalyptic number.

1211320022131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211320022131 is an equidigital number, since it uses as much as digits as its factorization.

1211320022131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1211320022131 its reverse (1312200231121), we get a palindrome (2523520253252).

The spelling of 1211320022131 in words is "one trillion, two hundred eleven billion, three hundred twenty million, twenty-two thousand, one hundred thirty-one".