123021210203 has 16 divisors (see below), whose sum is σ = 130863774720. Its totient is φ = 115316027136.

The previous prime is 123021210167. The next prime is 123021210287. The reversal of 123021210203 is 302012120321.

It is a cyclic number.

It is not a de Polignac number, because 123021210203 - 2¹² = 123021206107 is a prime.

It is a super-2 number, since 2×123021210203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123021210703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12171650 + ... + 12181752.

It is an arithmetic number, because the mean of its divisors is an integer number (8178985920).

Almost surely, 2^123021210203 is an apocalyptic number.

123021210203 is a deficient number, since it is larger than the sum of its proper divisors (7842564517).

123021210203 is a wasteful number, since it uses less digits than its factorization.

123021210203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16826.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 123021210203 its reverse (302012120321), we get a palindrome (425033330524).

The spelling of 123021210203 in words is "one hundred twenty-three billion, twenty-one million, two hundred ten thousand, two hundred three".