202032122121 has 12 divisors (see below), whose sum is σ = 291833838660. Its totient is φ = 134683621920.

The previous prime is 202032122087. The next prime is 202032122147. The reversal of 202032122121 is 121221230202.

202032122121 is a `hidden beast` number, since 202 + 0 + 321 + 22 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 441000000 + 201591122121 = 21000^2 + 448989^2 .

It is not a de Polignac number, because 202032122121 - 2¹³ = 202032113929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202032122094 and 202032122103.

It is not an unprimeable number, because it can be changed into a prime (202032122921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71986 + ... + 639723.

It is an arithmetic number, because the mean of its divisors is an integer number (24319486555).

Almost surely, 2^202032122121 is an apocalyptic number.

It is an amenable number.

202032122121 is a deficient number, since it is larger than the sum of its proper divisors (89801716539).

202032122121 is a wasteful number, since it uses less digits than its factorization.

202032122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743256 (or 743253 counting only the distinct ones).

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

Adding to 202032122121 its reverse (121221230202), we get a palindrome (323253352323).

The spelling of 202032122121 in words is "two hundred two billion, thirty-two million, one hundred twenty-two thousand, one hundred twenty-one".