202121002103 has 16 divisors (see below), whose sum is σ = 208747140096. Its totient is φ = 195587421120.

The previous prime is 202121002081. The next prime is 202121002129. The reversal of 202121002103 is 301200121202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202121002103 - 2¹⁴ = 202120985719 is a prime.

It is a super-2 number, since 2×202121002103² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121002163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3389675 + ... + 3448787.

It is an arithmetic number, because the mean of its divisors is an integer number (13046696256).

Almost surely, 2^202121002103 is an apocalyptic number.

202121002103 is a deficient number, since it is larger than the sum of its proper divisors (6626137993).

202121002103 is a wasteful number, since it uses less digits than its factorization.

202121002103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59894.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 202121002103 its reverse (301200121202), we get a palindrome (503321123305).

The spelling of 202121002103 in words is "two hundred two billion, one hundred twenty-one million, two thousand, one hundred three".