11121222121019 has 4 divisors (see below), whose sum is σ = 11168952688296. Its totient is φ = 11073491553744.

The previous prime is 11121222120997. The next prime is 11121222121021. The reversal of 11121222121019 is 91012122212111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11121222121019 - 2¹⁶ = 11121222055483 is a prime.

It is a super-2 number, since 2×11121222121019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121222121039) 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, 23865283289 + ... + 23865283754.

It is an arithmetic number, because the mean of its divisors is an integer number (2792238172074).

Almost surely, 2^{11121222121019} is an apocalyptic number.

11121222121019 is a deficient number, since it is larger than the sum of its proper divisors (47730567277).

11121222121019 is an equidigital number, since it uses as much as digits as its factorization.

11121222121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47730567276.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 11121222121019 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, nineteen".