20220221220210 has 128 divisors (see below), whose sum is σ = 58842501580800. Its totient is φ = 4900201824960.

The previous prime is 20220221220151. The next prime is 20220221220229. The reversal of 20220221220210 is 1202212202202.

20220221220210 is a `hidden beast` number, since 2 + 0 + 220 + 2 + 212 + 20 + 210 = 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 63 ways as a sum of consecutive naturals, for example, 7570587 + ... + 9887073.

It is an arithmetic number, because the mean of its divisors is an integer number (459707043600).

Almost surely, 2^{20220221220210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20220221220210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29421250790400).

20220221220210 is an abundant number, since it is smaller than the sum of its proper divisors (38622280360590).

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

20220221220210 is a wasteful number, since it uses less digits than its factorization.

20220221220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319453 (or 2319447 counting only the distinct ones).

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

Adding to 20220221220210 its reverse (1202212202202), we get a palindrome (21422433422412).

It can be divided in two parts, 202202 and 21220210, that added together give a palindrome (21422412).

The spelling of 20220221220210 in words is "twenty trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".