21425121041361 has 8 divisors (see below), whose sum is σ = 28589699820000. Its totient is φ = 14271978145152.

The previous prime is 21425121041353. The next prime is 21425121041447. The reversal of 21425121041361 is 16314012152412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21425121041361 - 2³ = 21425121041353 is a prime.

It is a super-2 number, since 2×21425121041361² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21425121041861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2858966235 + ... + 2858973728.

It is an arithmetic number, because the mean of its divisors is an integer number (3573712477500).

Almost surely, 2^{21425121041361} is an apocalyptic number.

It is an amenable number.

21425121041361 is a deficient number, since it is larger than the sum of its proper divisors (7164578778639).

21425121041361 is a wasteful number, since it uses less digits than its factorization.

21425121041361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717941215.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 21425121041361 its reverse (16314012152412), we get a palindrome (37739133193773).

The spelling of 21425121041361 in words is "twenty-one trillion, four hundred twenty-five billion, one hundred twenty-one million, forty-one thousand, three hundred sixty-one".