220121200212097 has 2 divisors, whose sum is σ = 220121200212098. Its totient is φ = 220121200212096.

The previous prime is 220121200212083. The next prime is 220121200212103. The reversal of 220121200212097 is 790212002121022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219792752017281 + 328448194816 = 14825409^2 + 573104^2 .

It is a cyclic number.

It is not a de Polignac number, because 220121200212097 - 2¹¹ = 220121200210049 is a prime.

It is not a weakly prime, because it can be changed into another prime (220121200212037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060600106048 + 110060600106049.

It is an arithmetic number, because the mean of its divisors is an integer number (110060600106049).

Almost surely, 2^{220121200212097} is an apocalyptic number.

It is an amenable number.

220121200212097 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121200212097 is an equidigital number, since it uses as much as digits as its factorization.

220121200212097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 220121200212097 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred million, two hundred twelve thousand, ninety-seven".