202132311021 has 12 divisors (see below), whose sum is σ = 299859945372. Its totient is φ = 131112850176.

The previous prime is 202132311019. The next prime is 202132311077. The reversal of 202132311021 is 120113231202.

202132311021 is a `hidden beast` number, since 202 + 132 + 311 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77056208100 + 125076102921 = 277590^2 + 353661^2 .

It is not a de Polignac number, because 202132311021 - 2¹ = 202132311019 is a prime.

It is a super-3 number, since 3×202132311021³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202132310985 and 202132311003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202132321021) 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, 303501636 + ... + 303502301.

It is an arithmetic number, because the mean of its divisors is an integer number (24988328781).

Almost surely, 2^202132311021 is an apocalyptic number.

It is an amenable number.

202132311021 is a deficient number, since it is larger than the sum of its proper divisors (97727634351).

202132311021 is a wasteful number, since it uses less digits than its factorization.

202132311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607003980 (or 607003977 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 202132311021 its reverse (120113231202), we get a palindrome (322245542223).

The spelling of 202132311021 in words is "two hundred two billion, one hundred thirty-two million, three hundred eleven thousand, twenty-one".