1212233213220 has 48 divisors (see below), whose sum is σ = 3394982629248. Its totient is φ = 323192701440.

The previous prime is 1212233213183. The next prime is 1212233213221. The reversal of 1212233213220 is 223123322121.

It is not an unprimeable number, because it can be changed into a prime (1212233213221) 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, 1889776 + ... + 2448615.

It is an arithmetic number, because the mean of its divisors is an integer number (70728804776).

Almost surely, 2^{1212233213220} is an apocalyptic number.

1212233213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212233213220 is an abundant number, since it is smaller than the sum of its proper divisors (2182749416028).

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

1212233213220 is a wasteful number, since it uses less digits than its factorization.

1212233213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343060 (or 4343058 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1212233213220 its reverse (223123322121), we get a palindrome (1435356535341).

The spelling of 1212233213220 in words is "one trillion, two hundred twelve billion, two hundred thirty-three million, two hundred thirteen thousand, two hundred twenty".