2113040122421 has 4 divisors (see below), whose sum is σ = 2113588825344. Its totient is φ = 2112491419500.

The previous prime is 2113040122357. The next prime is 2113040122429. The reversal of 2113040122421 is 1242210403112.

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 not a de Polignac number, because 2113040122421 - 2⁶ = 2113040122357 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 (2113040122429) 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, 274345685 + ... + 274353386.

It is an arithmetic number, because the mean of its divisors is an integer number (528397206336).

Almost surely, 2^{2113040122421} is an apocalyptic number.

It is an amenable number.

2113040122421 is a deficient number, since it is larger than the sum of its proper divisors (548702923).

2113040122421 is an equidigital number, since it uses as much as digits as its factorization.

2113040122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548702922.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2113040122421 its reverse (1242210403112), we get a palindrome (3355250525533).

The spelling of 2113040122421 in words is "two trillion, one hundred thirteen billion, forty million, one hundred twenty-two thousand, four hundred twenty-one".