12213033140 has 96 divisors (see below), whose sum is σ = 32180246784. Its totient is φ = 3782338560.

The previous prime is 12213033139. The next prime is 12213033181. The reversal of 12213033140 is 4133031221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216524 + ... + 267036.

It is an arithmetic number, because the mean of its divisors is an integer number (335210904).

Almost surely, 2^12213033140 is an apocalyptic number.

12213033140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12213033140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16090123392).

12213033140 is an abundant number, since it is smaller than the sum of its proper divisors (19967213644).

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

12213033140 is a wasteful number, since it uses less digits than its factorization.

12213033140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50697 (or 50695 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12213033140 its reverse (4133031221), we get a palindrome (16346064361).

The spelling of 12213033140 in words is "twelve billion, two hundred thirteen million, thirty-three thousand, one hundred forty".