2122212021420 has 192 divisors, whose sum is σ = 6612060381696. Its totient is φ = 506185666560.

The previous prime is 2122212021407. The next prime is 2122212021421. The reversal of 2122212021420 is 241202122212.

It is not an unprimeable number, because it can be changed into a prime (2122212021421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 968955 + ... + 2276685.

It is an arithmetic number, because the mean of its divisors is an integer number (34437814488).

Almost surely, 2^{2122212021420} is an apocalyptic number.

2122212021420 is a gapful number since it is divisible by the number (20) 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 2122212021420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3306030190848).

2122212021420 is an abundant number, since it is smaller than the sum of its proper divisors (4489848360276).

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

2122212021420 is a wasteful number, since it uses less digits than its factorization.

2122212021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307840 (or 1307838 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2122212021420 its reverse (241202122212), we get a palindrome (2363414143632).

The spelling of 2122212021420 in words is "two trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, four hundred twenty".