30212102120 has 16 divisors (see below), whose sum is σ = 67977229860. Its totient is φ = 12084840832.

The previous prime is 30212102113. The next prime is 30212102159. The reversal of 30212102120 is 2120121203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27797559076 + 2414543044 = 166726^2 + 49138^2 .

It is a super-2 number, since 2×30212102120² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30212102095 and 30212102104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377651237 + ... + 377651316.

Almost surely, 2^30212102120 is an apocalyptic number.

It is an amenable number.

30212102120 is an abundant number, since it is smaller than the sum of its proper divisors (37765127740).

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

30212102120 is a wasteful number, since it uses less digits than its factorization.

30212102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755302564 (or 755302560 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 30212102120 its reverse (2120121203), we get a palindrome (32332223323).

The spelling of 30212102120 in words is "thirty billion, two hundred twelve million, one hundred two thousand, one hundred twenty".