30001200120 has 64 divisors (see below), whose sum is σ = 100004004000. Its totient is φ = 8000319744.

The previous prime is 30001200113. The next prime is 30001200121. The reversal of 30001200120 is 2100210003.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001200121) 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, 13888365 + ... + 13890524.

Almost surely, 2^30001200120 is an apocalyptic number.

30001200120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30001200120 is an abundant number, since it is smaller than the sum of its proper divisors (70002803880).

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

30001200120 is a wasteful number, since it uses less digits than its factorization.

30001200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27778909 (or 27778899 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 30001200120 its reverse (2100210003), we get a palindrome (32101410123).

The spelling of 30001200120 in words is "thirty billion, one million, two hundred thousand, one hundred twenty".