221211022020222 has 16 divisors (see below), whose sum is σ = 476454508966800. Its totient is φ = 68064929852352.

The previous prime is 221211022020203. The next prime is 221211022020223. The reversal of 221211022020222 is 222020220112122.

221211022020222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221211022020222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211022020223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418019371847 + ... + 1418019372002.

It is an arithmetic number, because the mean of its divisors is an integer number (29778406810425).

Almost surely, 2^{221211022020222} is an apocalyptic number.

221211022020222 is an abundant number, since it is smaller than the sum of its proper divisors (255243486946578).

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

221211022020222 is a wasteful number, since it uses less digits than its factorization.

221211022020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836038743867.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221211022020222 its reverse (222020220112122), we get a palindrome (443231242132344).

The spelling of 221211022020222 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty-two million, twenty thousand, two hundred twenty-two".