11112121003 has 2 divisors, whose sum is σ = 11112121004. Its totient is φ = 11112121002.

The previous prime is 11112120983. The next prime is 11112121019. The reversal of 11112121003 is 30012121111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11112121003 - 2¹³ = 11112112811 is a prime.

It is not a weakly prime, because it can be changed into another prime (11112121073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060501 + 5556060502.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060502).

Almost surely, 2^11112121003 is an apocalyptic number.

11112121003 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112121003 is an equidigital number, since it uses as much as digits as its factorization.

11112121003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11112121003 its reverse (30012121111), we get a palindrome (41124242114).

The spelling of 11112121003 in words is "eleven billion, one hundred twelve million, one hundred twenty-one thousand, three".