2111213421420 has 24 divisors (see below), whose sum is σ = 5911397580144. Its totient is φ = 562990245696.

The previous prime is 2111213421407. The next prime is 2111213421433. The reversal of 2111213421420 is 241243121112.

It is an interprime number because it is at equal distance from previous prime (2111213421407) and next prime (2111213421433).

It is a super-2 number, since 2×2111213421420² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17593445119 + ... + 17593445238.

It is an arithmetic number, because the mean of its divisors is an integer number (246308232506).

Almost surely, 2^{2111213421420} is an apocalyptic number.

2111213421420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111213421420 is an abundant number, since it is smaller than the sum of its proper divisors (3800184158724).

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

2111213421420 is a wasteful number, since it uses less digits than its factorization.

2111213421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35186890369 (or 35186890367 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 2111213421420 its reverse (241243121112), we get a palindrome (2352456542532).

The spelling of 2111213421420 in words is "two trillion, one hundred eleven billion, two hundred thirteen million, four hundred twenty-one thousand, four hundred twenty".