220121220111269 has 2 divisors, whose sum is σ = 220121220111270. Its totient is φ = 220121220111268.

The previous prime is 220121220111109. The next prime is 220121220111319. The reversal of 220121220111269 is 962111022121022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147270044727169 + 72851175384100 = 12135487^2 + 8535290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220121220111269 is a prime.

It is a super-2 number, since 2×220121220111269² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220121220111469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060610055634 + 110060610055635.

It is an arithmetic number, because the mean of its divisors is an integer number (110060610055635).

Almost surely, 2^{220121220111269} is an apocalyptic number.

It is an amenable number.

220121220111269 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121220111269 is an equidigital number, since it uses as much as digits as its factorization.

220121220111269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 220121220111269 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, two hundred sixty-nine".