1111011401 has 2 divisors, whose sum is σ = 1111011402. Its totient is φ = 1111011400.

The previous prime is 1111011397. The next prime is 1111011409. The reversal of 1111011401 is 1041101111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1105629001 + 5382400 = 33251^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111011401 - 2² = 1111011397 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111011409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555505700 + 555505701.

It is an arithmetic number, because the mean of its divisors is an integer number (555505701).

Almost surely, 2^1111011401 is an apocalyptic number.

It is an amenable number.

1111011401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111011401 is an equidigital number, since it uses as much as digits as its factorization.

1111011401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1111011401 is about 33331.8376481106. The cubic root of 1111011401 is about 1035.7131854746.

Adding to 1111011401 its reverse (1041101111), we get a palindrome (2152112512).

The spelling of 1111011401 in words is "one billion, one hundred eleven million, eleven thousand, four hundred one".