203022120121 has 4 divisors (see below), whose sum is σ = 203023098000. Its totient is φ = 203021142244.

The previous prime is 203022120061. The next prime is 203022120131. The reversal of 203022120121 is 121021220302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203022120121 - 2²⁹ = 202485249209 is a prime.

It is a super-3 number, since 3×203022120121³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203022120095 and 203022120104.

It is not an unprimeable number, because it can be changed into a prime (203022120131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40291 + ... + 638488.

It is an arithmetic number, because the mean of its divisors is an integer number (50755774500).

Almost surely, 2^203022120121 is an apocalyptic number.

It is an amenable number.

203022120121 is a deficient number, since it is larger than the sum of its proper divisors (977879).

203022120121 is an equidigital number, since it uses as much as digits as its factorization.

203022120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977878.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 203022120121 its reverse (121021220302), we get a palindrome (324043340423).

The spelling of 203022120121 in words is "two hundred three billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".