220001001201 has 12 divisors (see below), whose sum is σ = 317903925300. Its totient is φ = 146609779680.

The previous prime is 220001001133. The next prime is 220001001217. The reversal of 220001001201 is 102100100022.

It can be written as a sum of positive squares in 2 ways, for example, as 133061530176 + 86939471025 = 364776^2 + 294855^2 .

It is not a de Polignac number, because 220001001201 - 2²¹ = 219998904049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (220001001601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4771990 + ... + 4817871.

It is an arithmetic number, because the mean of its divisors is an integer number (26491993775).

Almost surely, 2^220001001201 is an apocalyptic number.

It is an amenable number.

220001001201 is a deficient number, since it is larger than the sum of its proper divisors (97902924099).

220001001201 is a wasteful number, since it uses less digits than its factorization.

220001001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9592416 (or 9592413 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 220001001201 its reverse (102100100022), we get a palindrome (322101101223).

It can be divided in two parts, 22000 and 1001201, that added together give a palindrome (1023201).

The spelling of 220001001201 in words is "two hundred twenty billion, one million, one thousand, two hundred one".