203222121212 has 12 divisors (see below), whose sum is σ = 387969504216. Its totient is φ = 92373691440.

The previous prime is 203222121203. The next prime is 203222121229. The reversal of 203222121212 is 212121222302.

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, 2309342243 + ... + 2309342330.

It is an arithmetic number, because the mean of its divisors is an integer number (32330792018).

Almost surely, 2^203222121212 is an apocalyptic number.

203222121212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203222121212 is a deficient number, since it is larger than the sum of its proper divisors (184747383004).

203222121212 is a wasteful number, since it uses less digits than its factorization.

203222121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618684588 (or 4618684586 counting only the distinct ones).

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

Adding to 203222121212 its reverse (212121222302), we get a palindrome (415343343514).

The spelling of 203222121212 in words is "two hundred three billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".