10202121200 has 30 divisors (see below), whose sum is σ = 24510597144. Its totient is φ = 4080848320.

The previous prime is 10202121199. The next prime is 10202121203. The reversal of 10202121200 is 212120201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202121203) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 12752252 + ... + 12753051.

Almost surely, 2^10202121200 is an apocalyptic number.

10202121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202121200 is an abundant number, since it is smaller than the sum of its proper divisors (14308475944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10202121200 is a wasteful number, since it uses less digits than its factorization.

10202121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25505321 (or 25505310 counting only the distinct ones).

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

Adding to 10202121200 its reverse (212120201), we get a palindrome (10414241401).

Subtracting from 10202121200 its reverse (212120201), we obtain a palindrome (9990000999).

The spelling of 10202121200 in words is "ten billion, two hundred two million, one hundred twenty-one thousand, two hundred".