11211220121019 has 8 divisors (see below), whose sum is σ = 14948363274240. Its totient is φ = 7474111857576.

The previous prime is 11211220120987. The next prime is 11211220121071. The reversal of 11211220121019 is 91012102211211.

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

It is not a de Polignac number, because 11211220121019 - 2⁵ = 11211220120987 is a prime.

It is a super-2 number, since 2×11211220121019² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11211220121019.

It is not an unprimeable number, because it can be changed into a prime (11211220121719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7963227 + ... + 9264740.

It is an arithmetic number, because the mean of its divisors is an integer number (1868545409280).

Almost surely, 2^{11211220121019} is an apocalyptic number.

11211220121019 is a deficient number, since it is larger than the sum of its proper divisors (3737143153221).

11211220121019 is a wasteful number, since it uses less digits than its factorization.

11211220121019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17444889.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 11211220121019 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred twenty-one thousand, nineteen".