11120400121 has 2 divisors, whose sum is σ = 11120400122. Its totient is φ = 11120400120.

The previous prime is 11120400119. The next prime is 11120400127. The reversal of 11120400121 is 12100402111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10310371600 + 810028521 = 101540^2 + 28461^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120400121 - 2¹ = 11120400119 is a prime.

It is a super-2 number, since 2×11120400121² (a number of 21 digits) contains 22 as substring.

Together with 11120400119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11120400127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560200060 + 5560200061.

It is an arithmetic number, because the mean of its divisors is an integer number (5560200061).

Almost surely, 2^11120400121 is an apocalyptic number.

It is an amenable number.

11120400121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120400121 is an equidigital number, since it uses as much as digits as its factorization.

11120400121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11120400121 its reverse (12100402111), we get a palindrome (23220802232).

The spelling of 11120400121 in words is "eleven billion, one hundred twenty million, four hundred thousand, one hundred twenty-one".