20123012003 has 2 divisors, whose sum is σ = 20123012004. Its totient is φ = 20123012002.

The previous prime is 20123011999. The next prime is 20123012053. The reversal of 20123012003 is 30021032102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123012003 - 2² = 20123011999 is a prime.

It is a super-2 number, since 2×20123012003² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20123012053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061506001 + 10061506002.

It is an arithmetic number, because the mean of its divisors is an integer number (10061506002).

Almost surely, 2^20123012003 is an apocalyptic number.

20123012003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123012003 is an equidigital number, since it uses as much as digits as its factorization.

20123012003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20123012003 its reverse (30021032102), we get a palindrome (50144044105).

The spelling of 20123012003 in words is "twenty billion, one hundred twenty-three million, twelve thousand, three".