1211222001219 has 8 divisors (see below), whose sum is σ = 1649323576320. Its totient is φ = 790300880136.

The previous prime is 1211222001217. The next prime is 1211222001281. The reversal of 1211222001219 is 9121002221121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211222001219 - 2¹ = 1211222001217 is a prime.

It is a super-2 number, since 2×1211222001219² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211222001211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4295113339 + ... + 4295113620.

It is an arithmetic number, because the mean of its divisors is an integer number (206165447040).

Almost surely, 2^{1211222001219} is an apocalyptic number.

1211222001219 is a deficient number, since it is larger than the sum of its proper divisors (438101575101).

1211222001219 is an equidigital number, since it uses as much as digits as its factorization.

1211222001219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590227009.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 1211222001219 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one thousand, two hundred nineteen".