21220033301001 has 6 divisors (see below), whose sum is σ = 30651159212570. Its totient is φ = 14146688867328.

The previous prime is 21220033300909. The next prime is 21220033301003. The reversal of 21220033301001 is 10010333002212.

21220033301001 is a `hidden beast` number, since 212 + 20 + 0 + 3 + 330 + 100 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11834700825600 + 9385332475401 = 3440160^2 + 3063549^2 .

It is not a de Polignac number, because 21220033301001 - 2⁴³ = 12423940278793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220033301003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1178890738936 + ... + 1178890738953.

Almost surely, 2^{21220033301001} is an apocalyptic number.

It is an amenable number.

21220033301001 is a deficient number, since it is larger than the sum of its proper divisors (9431125911569).

21220033301001 is a wasteful number, since it uses less digits than its factorization.

21220033301001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357781477895 (or 2357781477892 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21220033301001 its reverse (10010333002212), we get a palindrome (31230366303213).

The spelling of 21220033301001 in words is "twenty-one trillion, two hundred twenty billion, thirty-three million, three hundred one thousand, one".