220020121212210 has 512 divisors, whose sum is σ = 712442710425600. Its totient is φ = 47708186112000.

The previous prime is 220020121212187. The next prime is 220020121212211. The reversal of 220020121212210 is 12212121020022.

It is a happy number.

220020121212210 is a `hidden beast` number, since 2 + 20 + 0 + 201 + 21 + 212 + 210 = 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 (220020121212211) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 70188702 + ... + 73256358.

It is an arithmetic number, because the mean of its divisors is an integer number (1391489668800).

Almost surely, 2^{220020121212210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220020121212210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356221355212800).

220020121212210 is an abundant number, since it is smaller than the sum of its proper divisors (492422589213390).

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

220020121212210 is a wasteful number, since it uses less digits than its factorization.

220020121212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067775 (or 3067769 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220020121212210 its reverse (12212121020022), we get a palindrome (232232242232232).

The spelling of 220020121212210 in words is "two hundred twenty trillion, twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred ten".