2021400032340 has 192 divisors, whose sum is σ = 6129754364160. Its totient is φ = 494767042560.

The previous prime is 2021400032297. The next prime is 2021400032401. The reversal of 2021400032340 is 432300041202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203580496 + ... + 203590424.

It is an arithmetic number, because the mean of its divisors is an integer number (31925803980).

Almost surely, 2^{2021400032340} is an apocalyptic number.

2021400032340 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 2021400032340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3064877182080).

2021400032340 is an abundant number, since it is smaller than the sum of its proper divisors (4108354331820).

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

2021400032340 is a wasteful number, since it uses less digits than its factorization.

2021400032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11402 (or 11400 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 2021400032340 its reverse (432300041202), we get a palindrome (2453700073542).

The spelling of 2021400032340 in words is "two trillion, twenty-one billion, four hundred million, thirty-two thousand, three hundred forty".