1102121219 has 4 divisors (see below), whose sum is σ = 1102217760. Its totient is φ = 1102024680.

The previous prime is 1102121173. The next prime is 1102121243. The reversal of 1102121219 is 9121212011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9121212011 = 17 ⋅536541883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102121219 is a prime.

It is a super-2 number, since 2×1102121219² = 2429342362740091922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1102121219.

It is not an unprimeable number, because it can be changed into a prime (1102121299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28427 + ... + 54884.

It is an arithmetic number, because the mean of its divisors is an integer number (275554440).

Almost surely, 2^1102121219 is an apocalyptic number.

1102121219 is a deficient number, since it is larger than the sum of its proper divisors (96541).

1102121219 is an equidigital number, since it uses as much as digits as its factorization.

1102121219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96540.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1102121219 is about 33198.2110813218. The cubic root of 1102121219 is about 1032.9432324806.

The spelling of 1102121219 in words is "one billion, one hundred two million, one hundred twenty-one thousand, two hundred nineteen".