202121102 has 32 divisors (see below), whose sum is σ = 323108352. Its totient is φ = 94630624.

The previous prime is 202121081. The next prime is 202121137. The reversal of 202121102 is 201121202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 637448 + ... + 637764.

It is an arithmetic number, because the mean of its divisors is an integer number (10097136).

Almost surely, 2^202121102 is an apocalyptic number.

202121102 is a deficient number, since it is larger than the sum of its proper divisors (120987250).

202121102 is a wasteful number, since it uses less digits than its factorization.

202121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 202121102 is about 14216.9301187000. The cubic root of 202121102 is about 586.8636618199.

Adding to 202121102 its reverse (201121202), we get a palindrome (403242304).

The spelling of 202121102 in words is "two hundred two million, one hundred twenty-one thousand, one hundred two".