30213213012 has 36 divisors (see below), whose sum is σ = 76705812820. Its totient is φ = 10027089792.

The previous prime is 30213213007. The next prime is 30213213047. The reversal of 30213213012 is 21031231203.

30213213012 is a `hidden beast` number, since 302 + 1 + 321 + 30 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28768908996 + 1444304016 = 169614^2 + 38004^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×30213213012² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1824193 + ... + 1840680.

Almost surely, 2^30213213012 is an apocalyptic number.

It is an amenable number.

30213213012 is an abundant number, since it is smaller than the sum of its proper divisors (46492599808).

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

30213213012 is a wasteful number, since it uses less digits than its factorization.

30213213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665112 (or 3665107 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30213213012 its reverse (21031231203), we get a palindrome (51244444215).

The spelling of 30213213012 in words is "thirty billion, two hundred thirteen million, two hundred thirteen thousand, twelve".