220221211212187 has 2 divisors, whose sum is σ = 220221211212188. Its totient is φ = 220221211212186.

The previous prime is 220221211212179. The next prime is 220221211212217. The reversal of 220221211212187 is 781212112122022.

220221211212187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220221211212187 - 2³ = 220221211212179 is a prime.

It is not a weakly prime, because it can be changed into another prime (220221211212787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110605606093 + 110110605606094.

It is an arithmetic number, because the mean of its divisors is an integer number (110110605606094).

Almost surely, 2^{220221211212187} is an apocalyptic number.

220221211212187 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221211212187 is an equidigital number, since it uses as much as digits as its factorization.

220221211212187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 34.

The spelling of 220221211212187 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, one hundred eighty-seven".