203121430022 has 16 divisors (see below), whose sum is σ = 351402738720. Its totient is φ = 86253398208.

The previous prime is 203121429971. The next prime is 203121430079. The reversal of 203121430022 is 220034121302.

It is a junction number, because it is equal to n+sod(n) for n = 203121429976 and 203121430003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66552023 + ... + 66555074.

It is an arithmetic number, because the mean of its divisors is an integer number (21962671170).

Almost surely, 2^203121430022 is an apocalyptic number.

203121430022 is a deficient number, since it is larger than the sum of its proper divisors (148281308698).

203121430022 is a wasteful number, since it uses less digits than its factorization.

203121430022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133107215.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203121430022 its reverse (220034121302), we get a palindrome (423155551324).

The spelling of 203121430022 in words is "two hundred three billion, one hundred twenty-one million, four hundred thirty thousand, twenty-two".