202121301204 has 144 divisors (see below), whose sum is σ = 523227274752. Its totient is φ = 65773264896.

The previous prime is 202121301197. The next prime is 202121301251. The reversal of 202121301204 is 402103121202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113105599 + ... + 113107385.

Almost surely, 2^202121301204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202121301204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261613637376).

202121301204 is an abundant number, since it is smaller than the sum of its proper divisors (321105973548).

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

202121301204 is a wasteful number, since it uses less digits than its factorization.

202121301204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 202121301204 its reverse (402103121202), we get a palindrome (604224422406).

The spelling of 202121301204 in words is "two hundred two billion, one hundred twenty-one million, three hundred one thousand, two hundred four".