12210134240 has 24 divisors (see below), whose sum is σ = 28846442520. Its totient is φ = 4884053632.

The previous prime is 12210134197. The next prime is 12210134263. The reversal of 12210134240 is 4243101221.

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 3 ways as a sum of consecutive naturals, for example, 38156510 + ... + 38156829.

It is an arithmetic number, because the mean of its divisors is an integer number (1201935105).

Almost surely, 2^12210134240 is an apocalyptic number.

12210134240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210134240 is an abundant number, since it is smaller than the sum of its proper divisors (16636308280).

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

12210134240 is an equidigital number, since it uses as much as digits as its factorization.

12210134240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76313354 (or 76313346 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12210134240 its reverse (4243101221), we get a palindrome (16453235461).

The spelling of 12210134240 in words is "twelve billion, two hundred ten million, one hundred thirty-four thousand, two hundred forty".