2122420212 has 96 divisors (see below), whose sum is σ = 6014131200. Its totient is φ = 641944800.

The previous prime is 2122420193. The next prime is 2122420217. The reversal of 2122420212 is 2120242212.

2122420212 is a `hidden beast` number, since 212 + 242 + 0 + 212 = 666.

It is a super-2 number, since 2×2122420212² = 9009335112612249888, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122420217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781537 + ... + 784247.

It is an arithmetic number, because the mean of its divisors is an integer number (62647200).

Almost surely, 2^2122420212 is an apocalyptic number.

2122420212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122420212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3007065600).

2122420212 is an abundant number, since it is smaller than the sum of its proper divisors (3891710988).

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

2122420212 is a wasteful number, since it uses less digits than its factorization.

2122420212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394 (or 3386 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2122420212 is about 46069.7320591297. The cubic root of 2122420212 is about 1285.1203210119.

Adding to 2122420212 its reverse (2120242212), we get a palindrome (4242662424).

The spelling of 2122420212 in words is "two billion, one hundred twenty-two million, four hundred twenty thousand, two hundred twelve".