221211201110022 has 48 divisors (see below), whose sum is σ = 482804078859648. Its totient is φ = 73198456911360.

The previous prime is 221211201110021. The next prime is 221211201110063. The reversal of 221211201110022 is 220011102112122.

221211201110022 is a `hidden beast` number, since 221 + 211 + 201 + 1 + 10 + 0 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 221211201109977 and 221211201110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211201110021) 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, 76642429 + ... + 79476312.

It is an arithmetic number, because the mean of its divisors is an integer number (10058418309576).

Almost surely, 2^{221211201110022} is an apocalyptic number.

221211201110022 is an abundant number, since it is smaller than the sum of its proper divisors (261592877749626).

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

221211201110022 is a wasteful number, since it uses less digits than its factorization.

221211201110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156119325 (or 156119322 counting only the distinct ones).

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

Adding to 221211201110022 its reverse (220011102112122), we get a palindrome (441222303222144).

The spelling of 221211201110022 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred one million, one hundred ten thousand, twenty-two".