1131121221037 has 2 divisors, whose sum is σ = 1131121221038. Its totient is φ = 1131121221036.

The previous prime is 1131121220923. The next prime is 1131121221049. The reversal of 1131121221037 is 7301221211311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1128462168681 + 2659052356 = 1062291^2 + 51566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131121221037 - 2¹⁵ = 1131121188269 is a prime.

It is a super-2 number, since 2×1131121221037² (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 (1131121222037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565560610518 + 565560610519.

It is an arithmetic number, because the mean of its divisors is an integer number (565560610519).

Almost surely, 2^{1131121221037} is an apocalyptic number.

It is an amenable number.

1131121221037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131121221037 is an equidigital number, since it uses as much as digits as its factorization.

1131121221037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 1131121221037 its reverse (7301221211311), we get a palindrome (8432342432348).

The spelling of 1131121221037 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, thirty-seven".