11121111021401 has 2 divisors, whose sum is σ = 11121111021402. Its totient is φ = 11121111021400.

The previous prime is 11121111021373. The next prime is 11121111021431. The reversal of 11121111021401 is 10412011112111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9800625054025 + 1320485967376 = 3130595^2 + 1149124^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121111021401 - 2⁶ = 11121111021337 is a prime.

It is a super-2 number, since 2×11121111021401² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11121111021401.

It is not a weakly prime, because it can be changed into another prime (11121111021431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560555510700 + 5560555510701.

It is an arithmetic number, because the mean of its divisors is an integer number (5560555510701).

Almost surely, 2^{11121111021401} is an apocalyptic number.

It is an amenable number.

11121111021401 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121111021401 is an equidigital number, since it uses as much as digits as its factorization.

11121111021401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11121111021401 its reverse (10412011112111), we get a palindrome (21533122133512).

The spelling of 11121111021401 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, twenty-one thousand, four hundred one".