21220200023001 has 16 divisors (see below), whose sum is σ = 32336502374400. Its totient is φ = 12125468778768.

The previous prime is 21220200022999. The next prime is 21220200023047. The reversal of 21220200023001 is 10032000202212.

It is a happy number.

It is not a de Polignac number, because 21220200023001 - 2¹ = 21220200022999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220200023201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14266521 + ... + 15683558.

It is an arithmetic number, because the mean of its divisors is an integer number (2021031398400).

Almost surely, 2^{21220200023001} is an apocalyptic number.

21220200023001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21220200023001 is a deficient number, since it is larger than the sum of its proper divisors (11116302351399).

21220200023001 is a wasteful number, since it uses less digits than its factorization.

21220200023001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29983828.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21220200023001 its reverse (10032000202212), we get a palindrome (31252200225213).

The spelling of 21220200023001 in words is "twenty-one trillion, two hundred twenty billion, two hundred million, twenty-three thousand, one".