21220222210002 has 32 divisors (see below), whose sum is σ = 47160623079360. Its totient is φ = 7072721344800.

The previous prime is 21220222210001. The next prime is 21220222210027. The reversal of 21220222210002 is 20001222202212.

21220222210002 is a `hidden beast` number, since 212 + 20 + 222 + 210 + 0 + 0 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (21220222210001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18495124 + ... + 19608927.

It is an arithmetic number, because the mean of its divisors is an integer number (1473769471230).

Almost surely, 2^{21220222210002} is an apocalyptic number.

21220222210002 is an abundant number, since it is smaller than the sum of its proper divisors (25940400869358).

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

21220222210002 is a wasteful number, since it uses less digits than its factorization.

21220222210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38114375 (or 38114369 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21220222210002 its reverse (20001222202212), we get a palindrome (41221444412214).

The spelling of 21220222210002 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred ten thousand, two".