220011122102021 has 2 divisors, whose sum is σ = 220011122102022. Its totient is φ = 220011122102020.

The previous prime is 220011122102017. The next prime is 220011122102041. The reversal of 220011122102021 is 120201221110022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219628102221025 + 383019880996 = 14819855^2 + 618886^2 .

It is a cyclic number.

It is not a de Polignac number, because 220011122102021 - 2² = 220011122102017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220011122102041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005561051010 + 110005561051011.

It is an arithmetic number, because the mean of its divisors is an integer number (110005561051011).

Almost surely, 2^{220011122102021} is an apocalyptic number.

It is an amenable number.

220011122102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220011122102021 is an equidigital number, since it uses as much as digits as its factorization.

220011122102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220011122102021 its reverse (120201221110022), we get a palindrome (340212343212043).

The spelling of 220011122102021 in words is "two hundred twenty trillion, eleven billion, one hundred twenty-two million, one hundred two thousand, twenty-one".