111100020220997 has 2 divisors, whose sum is σ = 111100020220998. Its totient is φ = 111100020220996.

The previous prime is 111100020220979. The next prime is 111100020221039. The reversal of 111100020220997 is 799022020001111.

Together with previous prime (111100020220979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60051867470596 + 51048152750401 = 7749314^2 + 7144799^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100020220997 - 2¹² = 111100020216901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100020220697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550010110498 + 55550010110499.

It is an arithmetic number, because the mean of its divisors is an integer number (55550010110499).

Almost surely, 2^{111100020220997} is an apocalyptic number.

It is an amenable number.

111100020220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100020220997 is an equidigital number, since it uses as much as digits as its factorization.

111100020220997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 111100020220997 in words is "one hundred eleven trillion, one hundred billion, twenty million, two hundred twenty thousand, nine hundred ninety-seven".