203444012121 has 8 divisors (see below), whose sum is σ = 310009923264. Its totient is φ = 116253721200.

The previous prime is 203444012119. The next prime is 203444012147. The reversal of 203444012121 is 121210444302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203444012121 - 2¹ = 203444012119 is a prime.

It is a super-3 number, since 3×203444012121³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203444012091 and 203444012100.

It is not an unprimeable number, because it can be changed into a prime (203444012111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4843905030 + ... + 4843905071.

It is an arithmetic number, because the mean of its divisors is an integer number (38751240408).

Almost surely, 2^203444012121 is an apocalyptic number.

203444012121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203444012121 is a deficient number, since it is larger than the sum of its proper divisors (106565911143).

203444012121 is an equidigital number, since it uses as much as digits as its factorization.

203444012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687810111.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 203444012121 its reverse (121210444302), we get a palindrome (324654456423).

The spelling of 203444012121 in words is "two hundred three billion, four hundred forty-four million, twelve thousand, one hundred twenty-one".