220100222122021 has 16 divisors (see below), whose sum is σ = 221416545849408. Its totient is φ = 218785024684800.

The previous prime is 220100222122019. The next prime is 220100222122043. The reversal of 220100222122021 is 120221222001022.

It is a cyclic number.

It is not a de Polignac number, because 220100222122021 - 2¹ = 220100222122019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220100222122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220100222128021) 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, 3812484726 + ... + 3812542456.

It is an arithmetic number, because the mean of its divisors is an integer number (13838534115588).

Almost surely, 2^{220100222122021} is an apocalyptic number.

It is an amenable number.

220100222122021 is a deficient number, since it is larger than the sum of its proper divisors (1316323727387).

220100222122021 is a wasteful number, since it uses less digits than its factorization.

220100222122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67092.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220100222122021 its reverse (120221222001022), we get a palindrome (340321444123043).

The spelling of 220100222122021 in words is "two hundred twenty trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty-one".