11220122121 has 16 divisors (see below), whose sum is σ = 16119526080. Its totient is φ = 6901012800.

The previous prime is 11220122087. The next prime is 11220122143. The reversal of 11220122121 is 12122102211.

It is not a de Polignac number, because 11220122121 - 2⁶ = 11220122057 is a prime.

It is a super-2 number, since 2×11220122121² (a number of 21 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 11220122121.

It is not an unprimeable number, because it can be changed into a prime (11220122521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1531 + ... + 149808.

It is an arithmetic number, because the mean of its divisors is an integer number (1007470380).

Almost surely, 2^11220122121 is an apocalyptic number.

It is an amenable number.

11220122121 is a deficient number, since it is larger than the sum of its proper divisors (4899403959).

11220122121 is a wasteful number, since it uses less digits than its factorization.

11220122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153256.

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

Adding to 11220122121 its reverse (12122102211), we get a palindrome (23342224332).

The spelling of 11220122121 in words is "eleven billion, two hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".