201222221111000 has 128 divisors (see below), whose sum is σ = 477929679514560. Its totient is φ = 79280606592000.

The previous prime is 201222221110997. The next prime is 201222221111003. The reversal of 201222221111000 is 111122222102.

It is an interprime number because it is at equal distance from previous prime (201222221110997) and next prime (201222221111003).

It is a self number, because there is not a number n which added to its sum of digits gives 201222221111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222221111003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 799921244 + ... + 800172756.

Almost surely, 2^{201222221111000} is an apocalyptic number.

201222221111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201222221111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238964839757280).

201222221111000 is an abundant number, since it is smaller than the sum of its proper divisors (276707458403560).

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

201222221111000 is a wasteful number, since it uses less digits than its factorization.

201222221111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263542 (or 263528 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201222221111000 its reverse (111122222102), we get a palindrome (201333343333102).

The spelling of 201222221111000 in words is "two hundred one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand".