1211130023412 has 48 divisors (see below), whose sum is σ = 2902520380032. Its totient is φ = 392775546240.

The previous prime is 1211130023393. The next prime is 1211130023437. The reversal of 1211130023412 is 2143200311121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8378098 + ... + 8521430.

It is an arithmetic number, because the mean of its divisors is an integer number (60469174584).

Almost surely, 2^{1211130023412} is an apocalyptic number.

1211130023412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211130023412 is an abundant number, since it is smaller than the sum of its proper divisors (1691390356620).

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

1211130023412 is a wasteful number, since it uses less digits than its factorization.

1211130023412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162408 (or 162406 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1211130023412 its reverse (2143200311121), we get a palindrome (3354330334533).

The spelling of 1211130023412 in words is "one trillion, two hundred eleven billion, one hundred thirty million, twenty-three thousand, four hundred twelve".