21420134041401 has 12 divisors (see below), whose sum is σ = 31011980613120. Its totient is φ = 14246956900440.

The previous prime is 21420134041349. The next prime is 21420134041433. The reversal of 21420134041401 is 10414043102412.

21420134041401 is a `hidden beast` number, since 2 + 1 + 4 + 201 + 3 + 40 + 414 + 0 + 1 = 666.

It is not a de Polignac number, because 21420134041401 - 2⁶ = 21420134041337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21420134041441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2761034281 + ... + 2761042038.

It is an arithmetic number, because the mean of its divisors is an integer number (2584331717760).

Almost surely, 2^{21420134041401} is an apocalyptic number.

It is an amenable number.

21420134041401 is a deficient number, since it is larger than the sum of its proper divisors (9591846571719).

21420134041401 is a wasteful number, since it uses less digits than its factorization.

21420134041401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522076756 (or 5522076753 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21420134041401 its reverse (10414043102412), we get a palindrome (31834177143813).

The spelling of 21420134041401 in words is "twenty-one trillion, four hundred twenty billion, one hundred thirty-four million, forty-one thousand, four hundred one".