21110122003 has 2 divisors, whose sum is σ = 21110122004. Its totient is φ = 21110122002.

The previous prime is 21110121983. The next prime is 21110122069. The reversal of 21110122003 is 30022101112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110122003 - 2¹⁷ = 21109990931 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110122403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555061001 + 10555061002.

It is an arithmetic number, because the mean of its divisors is an integer number (10555061002).

Almost surely, 2^21110122003 is an apocalyptic number.

21110122003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110122003 is an equidigital number, since it uses as much as digits as its factorization.

21110122003 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 13.

Adding to 21110122003 its reverse (30022101112), we get a palindrome (51132223115).

The spelling of 21110122003 in words is "twenty-one billion, one hundred ten million, one hundred twenty-two thousand, three".