120100120002 has 24 divisors (see below), whose sum is σ = 260285607036. Its totient is φ = 40022807136.

The previous prime is 120100120001. The next prime is 120100120003. The reversal of 120100120002 is 200021001021.

It is an interprime number because it is at equal distance from previous prime (120100120001) and next prime (120100120003).

It can be written as a sum of positive squares in 2 ways, for example, as 109488853881 + 10611266121 = 330891^2 + 103011^2 .

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 (120100120001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 810273 + ... + 946964.

Almost surely, 2^120100120002 is an apocalyptic number.

120100120002 is an abundant number, since it is smaller than the sum of its proper divisors (140185487034).

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

120100120002 is a wasteful number, since it uses less digits than its factorization.

120100120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761042 (or 1761039 counting only the distinct ones).

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

Adding to 120100120002 its reverse (200021001021), we get a palindrome (320121121023).

The spelling of 120100120002 in words is "one hundred twenty billion, one hundred million, one hundred twenty thousand, two".