21134220020001 has 48 divisors (see below), whose sum is σ = 33609847539840. Its totient is φ = 12690385344000.

The previous prime is 21134220019973. The next prime is 21134220020003. The reversal of 21134220020001 is 10002002243112.

It is a happy number.

21134220020001 is a `hidden beast` number, since 211 + 34 + 220 + 0 + 200 + 0 + 1 = 666.

It is not a de Polignac number, because 21134220020001 - 2⁹ = 21134220019489 is a prime.

It is a super-2 number, since 2×21134220020001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21134220020003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235641396 + ... + 235731066.

It is an arithmetic number, because the mean of its divisors is an integer number (700205157080).

Almost surely, 2^{21134220020001} is an apocalyptic number.

It is an amenable number.

21134220020001 is a deficient number, since it is larger than the sum of its proper divisors (12475627519839).

21134220020001 is a wasteful number, since it uses less digits than its factorization.

21134220020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111638 (or 111635 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21134220020001 its reverse (10002002243112), we get a palindrome (31136222263113).

The spelling of 21134220020001 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred twenty million, twenty thousand, one".