1211121101219 has 2 divisors, whose sum is σ = 1211121101220. Its totient is φ = 1211121101218.

The previous prime is 1211121101213. The next prime is 1211121101227. The reversal of 1211121101219 is 9121011211121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211121101219 is a prime.

It is a super-2 number, since 2×1211121101219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211121101194 and 1211121101203.

It is not a weakly prime, because it can be changed into another prime (1211121101213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605560550609 + 605560550610.

It is an arithmetic number, because the mean of its divisors is an integer number (605560550610).

Almost surely, 2^{1211121101219} is an apocalyptic number.

1211121101219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211121101219 is an equidigital number, since it uses as much as digits as its factorization.

1211121101219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 1211121101219 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, one hundred one thousand, two hundred nineteen".