220222101002021 has 16 divisors (see below), whose sum is σ = 233761476216240. Its totient is φ = 206748031426560.

The previous prime is 220222101001967. The next prime is 220222101002107. The reversal of 220222101002021 is 120200101222022.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 19828864225 + 220202272137796 = 140815^2 + 14839214^2 .

It is a cyclic number.

It is not a de Polignac number, because 220222101002021 - 2¹⁰ = 220222101000997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220222101002521) 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, 19705835 + ... + 28788263.

It is an arithmetic number, because the mean of its divisors is an integer number (14610092263515).

Almost surely, 2^{220222101002021} is an apocalyptic number.

It is an amenable number.

220222101002021 is a deficient number, since it is larger than the sum of its proper divisors (13539375214219).

220222101002021 is a wasteful number, since it uses less digits than its factorization.

220222101002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086024.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220222101002021 its reverse (120200101222022), we get a palindrome (340422202224043).

The spelling of 220222101002021 in words is "two hundred twenty trillion, two hundred twenty-two billion, one hundred one million, two thousand, twenty-one".