216002121222 has 16 divisors (see below), whose sum is σ = 445939863552. Its totient is φ = 69678103560.

The previous prime is 216002121221. The next prime is 216002121229. The reversal of 216002121222 is 222121200612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216002121221) 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, 580650678 + ... + 580651049.

It is an arithmetic number, because the mean of its divisors is an integer number (27871241472).

Almost surely, 2^216002121222 is an apocalyptic number.

216002121222 is an abundant number, since it is smaller than the sum of its proper divisors (229937742330).

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

216002121222 is a wasteful number, since it uses less digits than its factorization.

216002121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161301763.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 216002121222 its reverse (222121200612), we get a palindrome (438123321834).

The spelling of 216002121222 in words is "two hundred sixteen billion, two million, one hundred twenty-one thousand, two hundred twenty-two".