11122121211021 has 32 divisors (see below), whose sum is σ = 16513920952320. Its totient is φ = 7398232701552.

The previous prime is 11122121210987. The next prime is 11122121211023. The reversal of 11122121211021 is 12011212122111.

It is a happy number.

It is not a de Polignac number, because 11122121211021 - 2⁶ = 11122121210957 is a prime.

It is a super-2 number, since 2×11122121211021² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11122121210985 and 11122121211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122121211023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327846766 + ... + 327880688.

It is an arithmetic number, because the mean of its divisors is an integer number (516060029760).

Almost surely, 2^{11122121211021} is an apocalyptic number.

It is an amenable number.

11122121211021 is a deficient number, since it is larger than the sum of its proper divisors (5391799741299).

11122121211021 is a wasteful number, since it uses less digits than its factorization.

11122121211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60622 (or 60616 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11122121211021 its reverse (12011212122111), we get a palindrome (23133333333132).

The spelling of 11122121211021 in words is "eleven trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, twenty-one".