110120220021997 has 2 divisors, whose sum is σ = 110120220021998. Its totient is φ = 110120220021996.

The previous prime is 110120220021961. The next prime is 110120220022037. The reversal of 110120220021997 is 799120022021011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68495387125636 + 41624832896361 = 8276194^2 + 6451731^2 .

It is a cyclic number.

It is not a de Polignac number, because 110120220021997 - 2³¹ = 110118072538349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110120220021797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55060110010998 + 55060110010999.

It is an arithmetic number, because the mean of its divisors is an integer number (55060110010999).

Almost surely, 2^{110120220021997} is an apocalyptic number.

It is an amenable number.

110120220021997 is a deficient number, since it is larger than the sum of its proper divisors (1).

110120220021997 is an equidigital number, since it uses as much as digits as its factorization.

110120220021997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 110120220021997 in words is "one hundred ten trillion, one hundred twenty billion, two hundred twenty million, twenty-one thousand, nine hundred ninety-seven".