2111421104320 has 112 divisors (see below), whose sum is σ = 5493594352896. Its totient is φ = 766571904000.

The previous prime is 2111421104311. The next prime is 2111421104329. The reversal of 2111421104320 is 234011241112.

It is an interprime number because it is at equal distance from previous prime (2111421104311) and next prime (2111421104329).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2111421104291 and 2111421104300.

It is not an unprimeable number, because it can be changed into a prime (2111421104329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1745815 + ... + 2696425.

Almost surely, 2^{2111421104320} is an apocalyptic number.

2111421104320 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 2111421104320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2746797176448).

2111421104320 is an abundant number, since it is smaller than the sum of its proper divisors (3382173248576).

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

2111421104320 is a wasteful number, since it uses less digits than its factorization.

2111421104320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951270 (or 951260 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 2111421104320 its reverse (234011241112), we get a palindrome (2345432345432).

The spelling of 2111421104320 in words is "two trillion, one hundred eleven billion, four hundred twenty-one million, one hundred four thousand, three hundred twenty".