221211002121019 has 2 divisors, whose sum is σ = 221211002121020. Its totient is φ = 221211002121018.

The previous prime is 221211002120993. The next prime is 221211002121023. The reversal of 221211002121019 is 910121200112122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221211002121019 - 2¹³ = 221211002112827 is a prime.

It is a super-2 number, since 2×221211002121019² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221211002120984 and 221211002121002.

It is not a weakly prime, because it can be changed into another prime (221211002121119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605501060509 + 110605501060510.

It is an arithmetic number, because the mean of its divisors is an integer number (110605501060510).

Almost surely, 2^{221211002121019} is an apocalyptic number.

221211002121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211002121019 is an equidigital number, since it uses as much as digits as its factorization.

221211002121019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 221211002121019 in words is "two hundred twenty-one trillion, two hundred eleven billion, two million, one hundred twenty-one thousand, nineteen".