203102023121 has 8 divisors (see below), whose sum is σ = 208077311400. Its totient is φ = 198127762560.

The previous prime is 203102023087. The next prime is 203102023139. The reversal of 203102023121 is 121320201302.

It can be written as a sum of positive squares in 4 ways, for example, as 47834501521 + 155267521600 = 218711^2 + 394040^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 203102023121 - 2⁶ = 203102023057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203102023121.

It is not an unprimeable number, because it can be changed into a prime (203102023151) 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, 150995 + ... + 654983.

It is an arithmetic number, because the mean of its divisors is an integer number (26009663925).

Almost surely, 2^203102023121 is an apocalyptic number.

It is an amenable number.

203102023121 is a deficient number, since it is larger than the sum of its proper divisors (4975288279).

203102023121 is an equidigital number, since it uses as much as digits as its factorization.

203102023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513859.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203102023121 its reverse (121320201302), we get a palindrome (324422224423).

The spelling of 203102023121 in words is "two hundred three billion, one hundred two million, twenty-three thousand, one hundred twenty-one".