21220200001 has 32 divisors (see below), whose sum is σ = 28916794368. Its totient is φ = 15035423040.

The previous prime is 21220199927. The next prime is 21220200017. The reversal of 21220200001 is 10000202212.

It is a de Polignac number, because none of the positive numbers 2^k-21220200001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220200031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91135 + ... + 225268.

It is an arithmetic number, because the mean of its divisors is an integer number (903649824).

Almost surely, 2^21220200001 is an apocalyptic number.

It is an amenable number.

21220200001 is a deficient number, since it is larger than the sum of its proper divisors (7696594367).

21220200001 is a wasteful number, since it uses less digits than its factorization.

21220200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316501.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21220200001 its reverse (10000202212), we get a palindrome (31220402213).

The spelling of 21220200001 in words is "twenty-one billion, two hundred twenty million, two hundred thousand, one".