220101210111210 has 32 divisors (see below), whose sum is σ = 528250382341632. Its totient is φ = 58692825132480.

The previous prime is 220101210111151. The next prime is 220101210111217. The reversal of 220101210111210 is 12111012101022.

It is a happy number.

It is a super-2 number, since 2×220101210111210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 220101210111210.

It is not an unprimeable number, because it can be changed into a prime (220101210111217) 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, 49775121 + ... + 54016340.

It is an arithmetic number, because the mean of its divisors is an integer number (16507824448176).

Almost surely, 2^{220101210111210} is an apocalyptic number.

220101210111210 is an abundant number, since it is smaller than the sum of its proper divisors (308149172230422).

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

220101210111210 is a wasteful number, since it uses less digits than its factorization.

220101210111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103862158.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 220101210111210 its reverse (12111012101022), we get a palindrome (232212222212232).

The spelling of 220101210111210 in words is "two hundred twenty trillion, one hundred one billion, two hundred ten million, one hundred eleven thousand, two hundred ten".