10121221211202 has 48 divisors (see below), whose sum is σ = 22243144767480. Its totient is φ = 3325750272000.

The previous prime is 10121221211201. The next prime is 10121221211209. The reversal of 10121221211202 is 20211212212101.

10121221211202 is a `hidden beast` number, since 10 + 1 + 21 + 221 + 211 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9938893065201 + 182328146001 = 3152601^2 + 426999^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10121221211201) 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, 11739199 + ... + 12571842.

Almost surely, 2^{10121221211202} is an apocalyptic number.

10121221211202 is an abundant number, since it is smaller than the sum of its proper divisors (12121923556278).

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

10121221211202 is a wasteful number, since it uses less digits than its factorization.

10121221211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24311379 (or 24311376 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10121221211202 its reverse (20211212212101), we get a palindrome (30332433423303).

The spelling of 10121221211202 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred two".