211121022201222 has 128 divisors (see below), whose sum is σ = 534985436620800. Its totient is φ = 54202471335936.

The previous prime is 211121022201211. The next prime is 211121022201223. The reversal of 211121022201222 is 222102220121112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121022201223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100804947 + ... + 102877982.

It is an arithmetic number, because the mean of its divisors is an integer number (4179573723600).

Almost surely, 2^{211121022201222} is an apocalyptic number.

211121022201222 is an abundant number, since it is smaller than the sum of its proper divisors (323864414419578).

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

211121022201222 is a wasteful number, since it uses less digits than its factorization.

211121022201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203683030.

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

Adding to 211121022201222 its reverse (222102220121112), we get a palindrome (433223242322334).

The spelling of 211121022201222 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty-two million, two hundred one thousand, two hundred twenty-two".