1122122022021 has 72 divisors (see below), whose sum is σ = 2215098141984. Its totient is φ = 538080459840.

The previous prime is 1122122022001. The next prime is 1122122022121. The reversal of 1122122022021 is 1202202212211.

It is a happy number.

1122122022021 is a `hidden beast` number, since 1 + 1 + 221 + 220 + 220 + 2 + 1 = 666.

It is not a de Polignac number, because 1122122022021 - 2⁹ = 1122122021509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1122122021985 and 1122122022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122122022001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8833771 + ... + 8959896.

It is an arithmetic number, because the mean of its divisors is an integer number (30765251972).

Almost surely, 2^{1122122022021} is an apocalyptic number.

1122122022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122122022021 is a deficient number, since it is larger than the sum of its proper divisors (1092976119963).

1122122022021 is a wasteful number, since it uses less digits than its factorization.

1122122022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17793711 (or 17793701 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1122122022021 its reverse (1202202212211), we get a palindrome (2324324234232).

The spelling of 1122122022021 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty-two thousand, twenty-one".