1121210021137 has 2 divisors, whose sum is σ = 1121210021138. Its totient is φ = 1121210021136.

The previous prime is 1121210021081. The next prime is 1121210021149. The reversal of 1121210021137 is 7311200121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1105292666241 + 15917354896 = 1051329^2 + 126164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121210021137 - 2¹⁵ = 1121209988369 is a prime.

It is a super-2 number, since 2×1121210021137² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121210021177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605010568 + 560605010569.

It is an arithmetic number, because the mean of its divisors is an integer number (560605010569).

Almost surely, 2^{1121210021137} is an apocalyptic number.

It is an amenable number.

1121210021137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121210021137 is an equidigital number, since it uses as much as digits as its factorization.

1121210021137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 1121210021137 its reverse (7311200121211), we get a palindrome (8432410142348).

The spelling of 1121210021137 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, twenty-one thousand, one hundred thirty-seven".