10002123144 has 48 divisors (see below), whose sum is σ = 29172861900. Its totient is φ = 3077576064.

The previous prime is 10002123121. The next prime is 10002123181. The reversal of 10002123144 is 44132120001.

It can be written as a sum of positive squares in 2 ways, for example, as 9768950244 + 233172900 = 98838^2 + 15270^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5342079 + ... + 5343950.

Almost surely, 2^10002123144 is an apocalyptic number.

It is an amenable number.

10002123144 is an abundant number, since it is smaller than the sum of its proper divisors (19170738756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10002123144 is a wasteful number, since it uses less digits than its factorization.

10002123144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686054 (or 10686047 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10002123144 its reverse (44132120001), we get a palindrome (54134243145).

The spelling of 10002123144 in words is "ten billion, two million, one hundred twenty-three thousand, one hundred forty-four".