11021021222121 has 12 divisors (see below), whose sum is σ = 15919430562672. Its totient is φ = 7347265472376.

The previous prime is 11021021222093. The next prime is 11021021222147. The reversal of 11021021222121 is 12122212012011.

11021021222121 is a `hidden beast` number, since 1 + 1 + 0 + 210 + 212 + 221 + 21 = 666.

It is not a de Polignac number, because 11021021222121 - 2¹⁴ = 11021021205737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021021222094 and 11021021222103.

It is not an unprimeable number, because it can be changed into a prime (11021021922121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5977311 + ... + 7600676.

It is an arithmetic number, because the mean of its divisors is an integer number (1326619213556).

Almost surely, 2^{11021021222121} is an apocalyptic number.

It is an amenable number.

11021021222121 is a deficient number, since it is larger than the sum of its proper divisors (4898409340551).

11021021222121 is a wasteful number, since it uses less digits than its factorization.

11021021222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13668180 (or 13668177 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11021021222121 its reverse (12122212012011), we get a palindrome (23143233234132).

The spelling of 11021021222121 in words is "eleven trillion, twenty-one billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".