30100021012 has 6 divisors (see below), whose sum is σ = 52675036778. Its totient is φ = 15050010504.

The previous prime is 30100020991. The next prime is 30100021019. The reversal of 30100021012 is 21012000103.

It can be written as a sum of positive squares in only one way, i.e., 28461714436 + 1638306576 = 168706^2 + 40476^2 .

It is a super-3 number, since 3×30100021012³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 30100021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30100021019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3762502623 + ... + 3762502630.

Almost surely, 2^30100021012 is an apocalyptic number.

It is an amenable number.

30100021012 is a deficient number, since it is larger than the sum of its proper divisors (22575015766).

30100021012 is a wasteful number, since it uses less digits than its factorization.

30100021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525005257 (or 7525005255 counting only the distinct ones).

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

Adding to 30100021012 its reverse (21012000103), we get a palindrome (51112021115).

The spelling of 30100021012 in words is "thirty billion, one hundred million, twenty-one thousand, twelve".