10120001004 has 60 divisors (see below), whose sum is σ = 26500210968. Its totient is φ = 3367656000.

The previous prime is 10120000987. The next prime is 10120001033. The reversal of 10120001004 is 40010002101.

It is a happy number.

It is a super-2 number, since 2×10120001004² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 168739 + ... + 220709.

Almost surely, 2^10120001004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10120001004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13250105484).

10120001004 is an abundant number, since it is smaller than the sum of its proper divisors (16380209964).

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

10120001004 is a wasteful number, since it uses less digits than its factorization.

10120001004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52588 (or 52577 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10120001004 its reverse (40010002101), we get a palindrome (50130003105).

The spelling of 10120001004 in words is "ten billion, one hundred twenty million, one thousand, four".