221111201001073 has 2 divisors, whose sum is σ = 221111201001074. Its totient is φ = 221111201001072.

The previous prime is 221111201001049. The next prime is 221111201001101. The reversal of 221111201001073 is 370100102111122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206968735142464 + 14142465858609 = 14386408^2 + 3760647^2 .

It is a cyclic number.

It is not a de Polignac number, because 221111201001073 - 2²⁵ = 221111167446641 is a prime.

It is not a weakly prime, because it can be changed into another prime (221111201001013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555600500536 + 110555600500537.

It is an arithmetic number, because the mean of its divisors is an integer number (110555600500537).

Almost surely, 2^{221111201001073} is an apocalyptic number.

It is an amenable number.

221111201001073 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111201001073 is an equidigital number, since it uses as much as digits as its factorization.

221111201001073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 221111201001073 its reverse (370100102111122), we get a palindrome (591211303112195).

The spelling of 221111201001073 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred one million, one thousand, seventy-three".