2134240031021 has 16 divisors (see below), whose sum is σ = 2548681734144. Its totient is φ = 1747404712944.

The previous prime is 2134240031009. The next prime is 2134240031051. The reversal of 2134240031021 is 1201300424312.

It is a cyclic number.

It is not a de Polignac number, because 2134240031021 - 2⁶ = 2134240030957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134240031051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8999975 + ... + 9234068.

It is an arithmetic number, because the mean of its divisors is an integer number (159292608384).

Almost surely, 2^{2134240031021} is an apocalyptic number.

It is an amenable number.

2134240031021 is a deficient number, since it is larger than the sum of its proper divisors (414441703123).

2134240031021 is a wasteful number, since it uses less digits than its factorization.

2134240031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18234800.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2134240031021 its reverse (1201300424312), we get a palindrome (3335540455333).

The spelling of 2134240031021 in words is "two trillion, one hundred thirty-four billion, two hundred forty million, thirty-one thousand, twenty-one".