2121002034340 has 96 divisors (see below), whose sum is σ = 5177560227840. Its totient is φ = 714855020544.

The previous prime is 2121002034337. The next prime is 2121002034407. The reversal of 2121002034340 is 434302001212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1390812 + ... + 2485228.

It is an arithmetic number, because the mean of its divisors is an integer number (53932919040).

Almost surely, 2^{2121002034340} is an apocalyptic number.

2121002034340 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 2121002034340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2588780113920).

2121002034340 is an abundant number, since it is smaller than the sum of its proper divisors (3056558193500).

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

2121002034340 is a wasteful number, since it uses less digits than its factorization.

2121002034340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094669 (or 1094667 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 2121002034340 its reverse (434302001212), we get a palindrome (2555304035552).

The spelling of 2121002034340 in words is "two trillion, one hundred twenty-one billion, two million, thirty-four thousand, three hundred forty".