2043034402021 has 4 divisors (see below), whose sum is σ = 2043300049344. Its totient is φ = 2042768754700.

The previous prime is 2043034402009. The next prime is 2043034402027. The reversal of 2043034402021 is 1202044303402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043034402021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043034402027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132812125 + ... + 132827506.

It is an arithmetic number, because the mean of its divisors is an integer number (510825012336).

Almost surely, 2^{2043034402021} is an apocalyptic number.

It is an amenable number.

2043034402021 is a deficient number, since it is larger than the sum of its proper divisors (265647323).

2043034402021 is an equidigital number, since it uses as much as digits as its factorization.

2043034402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265647322.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 2043034402021 its reverse (1202044303402), we get a palindrome (3245078705423).

The spelling of 2043034402021 in words is "two trillion, forty-three billion, thirty-four million, four hundred two thousand, twenty-one".