220001021202001 has 16 divisors (see below), whose sum is σ = 237188981412544. Its totient is φ = 202850897033664.

The previous prime is 220001021201959. The next prime is 220001021202013. The reversal of 220001021202001 is 100202120100022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220001021202001 - 2¹³ = 220001021193809 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 (220001021202091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246609570 + ... + 1246786036.

It is an arithmetic number, because the mean of its divisors is an integer number (14824311338284).

Almost surely, 2^{220001021202001} is an apocalyptic number.

It is an amenable number.

220001021202001 is a deficient number, since it is larger than the sum of its proper divisors (17187960210543).

220001021202001 is a wasteful number, since it uses less digits than its factorization.

220001021202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283120.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220001021202001 its reverse (100202120100022), we get a palindrome (320203141302023).

The spelling of 220001021202001 in words is "two hundred twenty trillion, one billion, twenty-one million, two hundred two thousand, one".