202121104 has 10 divisors (see below), whose sum is σ = 391609670. Its totient is φ = 101060544.

The previous prime is 202121081. The next prime is 202121137. The reversal of 202121104 is 401121202.

It is a happy number.

202121104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 191545600 + 10575504 = 13840^2 + 3252^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6316269 + ... + 6316300.

It is an arithmetic number, because the mean of its divisors is an integer number (39160967).

Almost surely, 2^202121104 is an apocalyptic number.

It is an amenable number.

202121104 is a deficient number, since it is larger than the sum of its proper divisors (189488566).

202121104 is a wasteful number, since it uses less digits than its factorization.

202121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12632577 (or 12632571 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 202121104 is about 14216.9301890387. The cubic root of 202121104 is about 586.8636637556.

Adding to 202121104 its reverse (401121202), we get a palindrome (603242306).

It can be divided in two parts, 20212 and 1104, that added together give a square (21316 = 146²).

The spelling of 202121104 in words is "two hundred two million, one hundred twenty-one thousand, one hundred four".