212101110012220 has 96 divisors (see below), whose sum is σ = 528462626521536. Its totient is φ = 70489879296000.

The previous prime is 212101110012217. The next prime is 212101110012223. The reversal of 212101110012220 is 22210011101212.

It is an interprime number because it is at equal distance from previous prime (212101110012217) and next prime (212101110012223).

It is a super-2 number, since 2×212101110012220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212101110012194 and 212101110012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101110012223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366845929 + ... + 367423648.

It is an arithmetic number, because the mean of its divisors is an integer number (5504819026266).

Almost surely, 2^{212101110012220} is an apocalyptic number.

212101110012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101110012220 is an abundant number, since it is smaller than the sum of its proper divisors (316361516509316).

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

212101110012220 is a wasteful number, since it uses less digits than its factorization.

212101110012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734269711 (or 734269709 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212101110012220 its reverse (22210011101212), we get a palindrome (234311121113432).

The spelling of 212101110012220 in words is "two hundred twelve trillion, one hundred one billion, one hundred ten million, twelve thousand, two hundred twenty".