21032220001 has 8 divisors (see below), whose sum is σ = 22651235264. Its totient is φ = 19413369360.

The previous prime is 21032219959. The next prime is 21032220017. The reversal of 21032220001 is 10002223012.

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

It is a cyclic number.

It is not a de Polignac number, because 21032220001 - 2³³ = 12442285409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032220061) 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, 397156 + ... + 446986.

It is an arithmetic number, because the mean of its divisors is an integer number (2831404408).

Almost surely, 2^21032220001 is an apocalyptic number.

It is an amenable number.

21032220001 is a deficient number, since it is larger than the sum of its proper divisors (1619015263).

21032220001 is a wasteful number, since it uses less digits than its factorization.

21032220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82311.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21032220001 its reverse (10002223012), we get a palindrome (31034443013).

The spelling of 21032220001 in words is "twenty-one billion, thirty-two million, two hundred twenty thousand, one".