202012101 has 12 divisors (see below), whose sum is σ = 291951660. Its totient is φ = 134602560.

The previous prime is 202012093. The next prime is 202012127. The reversal of 202012101 is 101210202.

It can be written as a sum of positive squares in 2 ways, for example, as 74909025 + 127103076 = 8655^2 + 11274^2 .

It is not a de Polignac number, because 202012101 - 2³ = 202012093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15921 + ... + 25641.

It is an arithmetic number, because the mean of its divisors is an integer number (24329305).

Almost surely, 2^202012101 is an apocalyptic number.

It is an amenable number.

202012101 is a deficient number, since it is larger than the sum of its proper divisors (89939559).

202012101 is a wasteful number, since it uses less digits than its factorization.

202012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12036 (or 12033 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 202012101 is about 14213.0961088709. The cubic root of 202012101 is about 586.7581471426.

Adding to 202012101 its reverse (101210202), we get a palindrome (303222303).

The spelling of 202012101 in words is "two hundred two million, twelve thousand, one hundred one".