221220212119 has 2 divisors, whose sum is σ = 221220212120. Its totient is φ = 221220212118.

The previous prime is 221220212113. The next prime is 221220212123. The reversal of 221220212119 is 911212022122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221220212119 - 2¹³ = 221220203927 is a prime.

It is a super-2 number, since 2×221220212119² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221220212093 and 221220212102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221220212113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610106059 + 110610106060.

It is an arithmetic number, because the mean of its divisors is an integer number (110610106060).

Almost surely, 2^221220212119 is an apocalyptic number.

221220212119 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220212119 is an equidigital number, since it uses as much as digits as its factorization.

221220212119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 221220212119 in words is "two hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, one hundred nineteen".