211201212221202 has 128 divisors (see below), whose sum is σ = 494873320255488. Its totient is φ = 58848835046400.

The previous prime is 211201212221171. The next prime is 211201212221203. The reversal of 211201212221202 is 202122212102112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (211201212221203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113878173 + ... + 115717935.

It is an arithmetic number, because the mean of its divisors is an integer number (3866197814496).

Almost surely, 2^{211201212221202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211201212221202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247436660127744).

211201212221202 is an abundant number, since it is smaller than the sum of its proper divisors (283672108034286).

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

211201212221202 is a wasteful number, since it uses less digits than its factorization.

211201212221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840264.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211201212221202 its reverse (202122212102112), we get a palindrome (413323424323314).

The spelling of 211201212221202 in words is "two hundred eleven trillion, two hundred one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred two".