11222012121 has 8 divisors (see below), whose sum is σ = 15445350144. Its totient is φ = 7240007760.

The previous prime is 11222012119. The next prime is 11222012129. The reversal of 11222012121 is 12121022211.

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

It is not a de Polignac number, because 11222012121 - 2¹ = 11222012119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11222012121.

It is not an unprimeable number, because it can be changed into a prime (11222012129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60333306 + ... + 60333491.

It is an arithmetic number, because the mean of its divisors is an integer number (1930668768).

Almost surely, 2^11222012121 is an apocalyptic number.

It is an amenable number.

11222012121 is a deficient number, since it is larger than the sum of its proper divisors (4223338023).

11222012121 is a wasteful number, since it uses less digits than its factorization.

11222012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120666831.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11222012121 its reverse (12121022211), we get a palindrome (23343034332).

The spelling of 11222012121 in words is "eleven billion, two hundred twenty-two million, twelve thousand, one hundred twenty-one".