201203240121 has 48 divisors (see below), whose sum is σ = 331540779024. Its totient is φ = 116482240512.

The previous prime is 201203240113. The next prime is 201203240143. The reversal of 201203240121 is 121042302102.

It is a happy number.

201203240121 is a `hidden beast` number, since 201 + 20 + 324 + 0 + 121 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 11291187600 + 189912052521 = 106260^2 + 435789^2 .

It is not a de Polignac number, because 201203240121 - 2³ = 201203240113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201203240094 and 201203240103.

It is not an unprimeable number, because it can be changed into a prime (201203240171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4706575 + ... + 4749131.

It is an arithmetic number, because the mean of its divisors is an integer number (6907099563).

Almost surely, 2^201203240121 is an apocalyptic number.

It is an amenable number.

201203240121 is a deficient number, since it is larger than the sum of its proper divisors (130337538903).

201203240121 is a wasteful number, since it uses less digits than its factorization.

201203240121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44970 (or 44967 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201203240121 its reverse (121042302102), we get a palindrome (322245542223).

The spelling of 201203240121 in words is "two hundred one billion, two hundred three million, two hundred forty thousand, one hundred twenty-one".