1121210137 has 2 divisors, whose sum is σ = 1121210138. Its totient is φ = 1121210136.

The previous prime is 1121210117. The next prime is 1121210143. The reversal of 1121210137 is 7310121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 818589321 + 302620816 = 28611^2 + 17396^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121210137 - 2⁷ = 1121210009 is a prime.

It is a super-2 number, since 2×1121210137² = 2514224342623117538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121210117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605068 + 560605069.

It is an arithmetic number, because the mean of its divisors is an integer number (560605069).

Almost surely, 2^1121210137 is an apocalyptic number.

It is an amenable number.

1121210137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121210137 is an equidigital number, since it uses as much as digits as its factorization.

1121210137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 1121210137 is about 33484.4760598102. The cubic root of 1121210137 is about 1038.8727112917.

Adding to 1121210137 its reverse (7310121211), we get a palindrome (8431331348).

The spelling of 1121210137 in words is "one billion, one hundred twenty-one million, two hundred ten thousand, one hundred thirty-seven".