1211212119 has 16 divisors (see below), whose sum is σ = 1781597664. Its totient is φ = 727180800.

The previous prime is 1211212117. The next prime is 1211212151. The reversal of 1211212119 is 9112121121.

It is not a de Polignac number, because 1211212119 - 2¹ = 1211212117 is a prime.

It is a super-2 number, since 2×1211212119² = 2934069594424940322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211212095 and 1211212104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211212117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377142 + ... + 380339.

It is an arithmetic number, because the mean of its divisors is an integer number (111349854).

Almost surely, 2^1211212119 is an apocalyptic number.

1211212119 is a deficient number, since it is larger than the sum of its proper divisors (570385545).

1211212119 is a wasteful number, since it uses less digits than its factorization.

1211212119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757538.

The product of its digits is 72, while the sum is 21.

The square root of 1211212119 is about 34802.4728862763. The cubic root of 1211212119 is about 1065.9579408046.

The spelling of 1211212119 in words is "one billion, two hundred eleven million, two hundred twelve thousand, one hundred nineteen".