11211221012202 has 24 divisors (see below), whose sum is σ = 24563911210020. Its totient is φ = 3695084078400.

The previous prime is 11211221012177. The next prime is 11211221012209. The reversal of 11211221012202 is 20221012211211.

11211221012202 is a `hidden beast` number, since 11 + 211 + 221 + 0 + 1 + 220 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10663353099441 + 547867912761 = 3265479^2 + 740181^2 .

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 (11211221012209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3499131049 + ... + 3499134252.

Almost surely, 2^{11211221012202} is an apocalyptic number.

11211221012202 is an abundant number, since it is smaller than the sum of its proper divisors (13352690197818).

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

11211221012202 is a wasteful number, since it uses less digits than its factorization.

11211221012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998265398 (or 6998265395 counting only the distinct ones).

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

Adding to 11211221012202 its reverse (20221012211211), we get a palindrome (31432233223413).

The spelling of 11211221012202 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-one million, twelve thousand, two hundred two".