1230211212 has 24 divisors (see below), whose sum is σ = 2995297536. Its totient is φ = 392241168.

The previous prime is 1230211201. The next prime is 1230211237. The reversal of 1230211212 is 2121120321.

It is a super-2 number, since 2×1230211212² = 3026839252261017888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230211191 and 1230211200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228368 + ... + 2228919.

It is an arithmetic number, because the mean of its divisors is an integer number (124804064).

Almost surely, 2^1230211212 is an apocalyptic number.

1230211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230211212 is an abundant number, since it is smaller than the sum of its proper divisors (1765086324).

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

1230211212 is a wasteful number, since it uses less digits than its factorization.

1230211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457317 (or 4457315 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1230211212 is about 35074.3668795318. The cubic root of 1230211212 is about 1071.5025944337.

Adding to 1230211212 its reverse (2121120321), we get a palindrome (3351331533).

The spelling of 1230211212 in words is "one billion, two hundred thirty million, two hundred eleven thousand, two hundred twelve".