1121221131031 has 2 divisors, whose sum is σ = 1121221131032. Its totient is φ = 1121221131030.

The previous prime is 1121221130999. The next prime is 1121221131059. The reversal of 1121221131031 is 1301311221211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121221131031 - 2⁵ = 1121221130999 is a prime.

It is a super-2 number, since 2×1121221131031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121221131091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560610565515 + 560610565516.

It is an arithmetic number, because the mean of its divisors is an integer number (560610565516).

Almost surely, 2^{1121221131031} is an apocalyptic number.

1121221131031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121221131031 is an equidigital number, since it uses as much as digits as its factorization.

1121221131031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121221131031 its reverse (1301311221211), we get a palindrome (2422532352242).

The spelling of 1121221131031 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thirty-one thousand, thirty-one".