203211222122 has 4 divisors (see below), whose sum is σ = 304816833186. Its totient is φ = 101605611060.

The previous prime is 203211222107. The next prime is 203211222127. The reversal of 203211222122 is 221222112302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 203165646121 + 45576001 = 450739^2 + 6751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203211222094 and 203211222103.

It is not an unprimeable number, because it can be changed into a prime (203211222127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50802805529 + ... + 50802805532.

Almost surely, 2^203211222122 is an apocalyptic number.

203211222122 is a deficient number, since it is larger than the sum of its proper divisors (101605611064).

203211222122 is a wasteful number, since it uses less digits than its factorization.

203211222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101605611063.

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

Adding to 203211222122 its reverse (221222112302), we get a palindrome (424433334424).

The spelling of 203211222122 in words is "two hundred three billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-two".