30111000212 has 6 divisors (see below), whose sum is σ = 52694250378. Its totient is φ = 15055500104.

The previous prime is 30111000191. The next prime is 30111000221. The reversal of 30111000212 is 21200011103.

It can be written as a sum of positive squares in only one way, i.e., 28299987076 + 1811013136 = 168226^2 + 42556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30111000193 and 30111000202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3763875023 + ... + 3763875030.

It is an arithmetic number, because the mean of its divisors is an integer number (8782375063).

Almost surely, 2^30111000212 is an apocalyptic number.

It is an amenable number.

30111000212 is a deficient number, since it is larger than the sum of its proper divisors (22583250166).

30111000212 is a wasteful number, since it uses less digits than its factorization.

30111000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527750057 (or 7527750055 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 30111000212 its reverse (21200011103), we get a palindrome (51311011315).

The spelling of 30111000212 in words is "thirty billion, one hundred eleven million, two hundred twelve", and thus it is an aban number.