10200120003 has 24 divisors (see below), whose sum is σ = 16021819008. Its totient is φ = 6227096832.

The previous prime is 10200120001. The next prime is 10200120013. The reversal of 10200120003 is 30002100201.

It is a happy number.

It is not a de Polignac number, because 10200120003 - 2¹ = 10200120001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10200120001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 895251 + ... + 906572.

It is an arithmetic number, because the mean of its divisors is an integer number (667575792).

Almost surely, 2^10200120003 is an apocalyptic number.

10200120003 is a deficient number, since it is larger than the sum of its proper divisors (5821699005).

10200120003 is a wasteful number, since it uses less digits than its factorization.

10200120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801883 (or 1801880 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 10200120003 its reverse (30002100201), we get a palindrome (40202220204).

The spelling of 10200120003 in words is "ten billion, two hundred million, one hundred twenty thousand, three".