2120021244043 has 16 divisors (see below), whose sum is σ = 2169371782080. Its totient is φ = 2071024091136.

The previous prime is 2120021244023. The next prime is 2120021244049. The reversal of 2120021244043 is 3404421200212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120021244043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120021243999 and 2120021244017.

It is not an unprimeable number, because it can be changed into a prime (2120021244049) 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, 32344378 + ... + 32409856.

It is an arithmetic number, because the mean of its divisors is an integer number (135585736380).

Almost surely, 2^{2120021244043} is an apocalyptic number.

2120021244043 is a deficient number, since it is larger than the sum of its proper divisors (49350538037).

2120021244043 is a wasteful number, since it uses less digits than its factorization.

2120021244043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68166.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 2120021244043 its reverse (3404421200212), we get a palindrome (5524442444255).

The spelling of 2120021244043 in words is "two trillion, one hundred twenty billion, twenty-one million, two hundred forty-four thousand, forty-three".