20221221002202 has 96 divisors (see below), whose sum is σ = 49090687835904. Its totient is φ = 5961629808000.

The previous prime is 20221221002027. The next prime is 20221221002261. The reversal of 20221221002202 is 20220012212202.

20221221002202 is a `hidden beast` number, since 2 + 0 + 221 + 221 + 0 + 0 + 220 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119336463 + ... + 119505789.

It is an arithmetic number, because the mean of its divisors is an integer number (511361331624).

Almost surely, 2^{20221221002202} is an apocalyptic number.

20221221002202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221221002202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24545343917952).

20221221002202 is an abundant number, since it is smaller than the sum of its proper divisors (28869466833702).

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

20221221002202 is a wasteful number, since it uses less digits than its factorization.

20221221002202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185684 (or 185681 counting only the distinct ones).

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

Adding to 20221221002202 its reverse (20220012212202), we get a palindrome (40441233214404).

The spelling of 20221221002202 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, two thousand, two hundred two".