22203221021212 has 48 divisors (see below), whose sum is σ = 48896133366528. Its totient is φ = 8569758798720.

The previous prime is 22203221021203. The next prime is 22203221021213. The reversal of 22203221021212 is 21212012230222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22203221021213) 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, 336828633 + ... + 336894544.

It is an arithmetic number, because the mean of its divisors is an integer number (1018669445136).

Almost surely, 2^{22203221021212} is an apocalyptic number.

22203221021212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22203221021212 is an abundant number, since it is smaller than the sum of its proper divisors (26692912345316).

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

22203221021212 is a wasteful number, since it uses less digits than its factorization.

22203221021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673723306 (or 673723304 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22203221021212 its reverse (21212012230222), we get a palindrome (43415233251434).

The spelling of 22203221021212 in words is "twenty-two trillion, two hundred three billion, two hundred twenty-one million, twenty-one thousand, two hundred twelve".