212100122201022 has 24 divisors (see below), whose sum is σ = 501327561566520. Its totient is φ = 64272764303280.

The previous prime is 212100122200997. The next prime is 212100122201041. The reversal of 212100122201022 is 220102221001212.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 212100122200986 and 212100122201004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 535606368997 + ... + 535606369392.

It is an arithmetic number, because the mean of its divisors is an integer number (20888648398605).

Almost surely, 2^{212100122201022} is an apocalyptic number.

212100122201022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212100122201022 is an abundant number, since it is smaller than the sum of its proper divisors (289227439365498).

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

212100122201022 is a wasteful number, since it uses less digits than its factorization.

212100122201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071212738408 (or 1071212738405 counting only the distinct ones).

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

Adding to 212100122201022 its reverse (220102221001212), we get a palindrome (432202343202234).

The spelling of 212100122201022 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-two million, two hundred one thousand, twenty-two".