120001000002 has 128 divisors (see below), whose sum is σ = 266773893120. Its totient is φ = 35755292160.

The previous prime is 120000999991. The next prime is 120001000037. The reversal of 120001000002 is 200000100021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 244400977 + ... + 244401467.

It is an arithmetic number, because the mean of its divisors is an integer number (2084171040).

Almost surely, 2^120001000002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120001000002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133386946560).

120001000002 is an abundant number, since it is smaller than the sum of its proper divisors (146772893118).

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

120001000002 is a wasteful number, since it uses less digits than its factorization.

120001000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 120001000002 its reverse (200000100021), we get a palindrome (320001100023).

The spelling of 120001000002 in words is "one hundred twenty billion, one million, two", and thus it is an aban number.