212142112220 has 24 divisors (see below), whose sum is σ = 446049147600. Its totient is φ = 84751947392.

The previous prime is 212142112181. The next prime is 212142112249. The reversal of 212142112220 is 22211241212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212142112192 and 212142112201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6539510 + ... + 6571869.

It is an arithmetic number, because the mean of its divisors is an integer number (18585381150).

Almost surely, 2^212142112220 is an apocalyptic number.

212142112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212142112220 is an abundant number, since it is smaller than the sum of its proper divisors (233907035380).

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

212142112220 is a wasteful number, since it uses less digits than its factorization.

212142112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13112197 (or 13112195 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212142112220 its reverse (22211241212), we get a palindrome (234353353432).

The spelling of 212142112220 in words is "two hundred twelve billion, one hundred forty-two million, one hundred twelve thousand, two hundred twenty".