2134221240021 has 32 divisors (see below), whose sum is σ = 3222173509632. Its totient is φ = 1246674137280.

The previous prime is 2134221240017. The next prime is 2134221240029. The reversal of 2134221240021 is 1200421224312.

It is not a de Polignac number, because 2134221240021 - 2² = 2134221240017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2134221239973 and 2134221240000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134221240029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8963745 + ... + 9198758.

It is an arithmetic number, because the mean of its divisors is an integer number (100692922176).

Almost surely, 2^{2134221240021} is an apocalyptic number.

It is an amenable number.

2134221240021 is a deficient number, since it is larger than the sum of its proper divisors (1087952269611).

2134221240021 is a wasteful number, since it uses less digits than its factorization.

2134221240021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18162673.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2134221240021 its reverse (1200421224312), we get a palindrome (3334642464333).

The spelling of 2134221240021 in words is "two trillion, one hundred thirty-four billion, two hundred twenty-one million, two hundred forty thousand, twenty-one".