30111211212 has 48 divisors (see below), whose sum is σ = 73102508640. Its totient is φ = 9634928128.

The previous prime is 30111211211. The next prime is 30111211213. The reversal of 30111211212 is 21211211103.

It is an interprime number because it is at equal distance from previous prime (30111211211) and next prime (30111211213).

It is a junction number, because it is equal to n+sod(n) for n = 30111211191 and 30111211200.

It is not an unprimeable number, because it can be changed into a prime (30111211211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189873 + ... + 310280.

It is an arithmetic number, because the mean of its divisors is an integer number (1522968930).

Almost surely, 2^30111211212 is an apocalyptic number.

It is an amenable number.

30111211212 is an abundant number, since it is smaller than the sum of its proper divisors (42991297428).

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

30111211212 is a wasteful number, since it uses less digits than its factorization.

30111211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500362 (or 500360 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 30111211212 its reverse (21211211103), we get a palindrome (51322422315).

The spelling of 30111211212 in words is "thirty billion, one hundred eleven million, two hundred eleven thousand, two hundred twelve".