2123012003 has 8 divisors (see below), whose sum is σ = 2569023072. Its totient is φ = 1712681856.

The previous prime is 2123011999. The next prime is 2123012009. The reversal of 2123012003 is 3002103212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123012003 - 2² = 2123011999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123012009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8920100 + ... + 8920337.

It is an arithmetic number, because the mean of its divisors is an integer number (321127884).

Almost surely, 2^2123012003 is an apocalyptic number.

2123012003 is a deficient number, since it is larger than the sum of its proper divisors (446011069).

2123012003 is a wasteful number, since it uses less digits than its factorization.

2123012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17840461.

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

The square root of 2123012003 is about 46076.1543859728. The cubic root of 2123012003 is about 1285.2397525869.

Adding to 2123012003 its reverse (3002103212), we get a palindrome (5125115215).

It can be divided in two parts, 21230 and 12003, that added together give a palindrome (33233).

The spelling of 2123012003 in words is "two billion, one hundred twenty-three million, twelve thousand, three".