103011111421 has 2 divisors, whose sum is σ = 103011111422. Its totient is φ = 103011111420.

The previous prime is 103011111403. The next prime is 103011111443. The reversal of 103011111421 is 124111110301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93155585796 + 9855525625 = 305214^2 + 99275^2 .

It is an emirp because it is prime and its reverse (124111110301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103011111421 - 2⁵ = 103011111389 is a prime.

It is a super-2 number, since 2×103011111421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103011111395 and 103011111404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103011181421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51505555710 + 51505555711.

It is an arithmetic number, because the mean of its divisors is an integer number (51505555711).

Almost surely, 2^103011111421 is an apocalyptic number.

It is an amenable number.

103011111421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103011111421 is an equidigital number, since it uses as much as digits as its factorization.

103011111421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 103011111421 its reverse (124111110301), we get a palindrome (227122221722).

The spelling of 103011111421 in words is "one hundred three billion, eleven million, one hundred eleven thousand, four hundred twenty-one".