30002121100 has 72 divisors (see below), whose sum is σ = 76971011040. Its totient is φ = 9931729920.

The previous prime is 30002121077. The next prime is 30002121109. The reversal of 30002121100 is 112120003.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (30002121109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 718669 + ... + 759268.

It is an arithmetic number, because the mean of its divisors is an integer number (1069041820).

Almost surely, 2^30002121100 is an apocalyptic number.

It is an amenable number.

30002121100 is an abundant number, since it is smaller than the sum of its proper divisors (46968889940).

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

30002121100 is a wasteful number, since it uses less digits than its factorization.

30002121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477987 (or 1477980 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 30002121100 its reverse (112120003), we get a palindrome (30114241103).

The spelling of 30002121100 in words is "thirty billion, two million, one hundred twenty-one thousand, one hundred".