1101021221219 has 2 divisors, whose sum is σ = 1101021221220. Its totient is φ = 1101021221218.

The previous prime is 1101021221191. The next prime is 1101021221221. The reversal of 1101021221219 is 9121221201011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1101021221219 - 2²⁰ = 1101020172643 is a prime.

It is a super-2 number, since 2×1101021221219² (a number of 25 digits) contains 22 as substring.

Together with 1101021221221, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101021221194 and 1101021221203.

It is not a weakly prime, because it can be changed into another prime (1101021221249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550510610609 + 550510610610.

It is an arithmetic number, because the mean of its divisors is an integer number (550510610610).

Almost surely, 2^{1101021221219} is an apocalyptic number.

1101021221219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101021221219 is an equidigital number, since it uses as much as digits as its factorization.

1101021221219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1101021221219 in words is "one trillion, one hundred one billion, twenty-one million, two hundred twenty-one thousand, two hundred nineteen".