10121000202 has 48 divisors (see below), whose sum is σ = 22578264072. Its totient is φ = 3274214400.

The previous prime is 10121000191. The next prime is 10121000207. The reversal of 10121000202 is 20200012101.

It can be written as a sum of positive squares in 4 ways, for example, as 9838457721 + 282542481 = 99189^2 + 16809^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10121000207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248118 + ... + 286014.

Almost surely, 2^10121000202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10121000202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11289132036).

10121000202 is an abundant number, since it is smaller than the sum of its proper divisors (12457263870).

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

10121000202 is a wasteful number, since it uses less digits than its factorization.

10121000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38343 (or 38340 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10121000202 its reverse (20200012101), we get a palindrome (30321012303).

The spelling of 10121000202 in words is "ten billion, one hundred twenty-one million, two hundred two", and thus it is an aban number.