1000120221031 has 2 divisors, whose sum is σ = 1000120221032. Its totient is φ = 1000120221030.

The previous prime is 1000120221019. The next prime is 1000120221047. The reversal of 1000120221031 is 1301220210001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000120221031 - 2⁷ = 1000120220903 is a prime.

It is a super-2 number, since 2×1000120221031² (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 (1000120221091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500060110515 + 500060110516.

It is an arithmetic number, because the mean of its divisors is an integer number (500060110516).

Almost surely, 2^{1000120221031} is an apocalyptic number.

1000120221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000120221031 is an equidigital number, since it uses as much as digits as its factorization.

1000120221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1000120221031 its reverse (1301220210001), we get a palindrome (2301340431032).

The spelling of 1000120221031 in words is "one trillion, one hundred twenty million, two hundred twenty-one thousand, thirty-one".