11122221012021 has 12 divisors (see below), whose sum is σ = 18360491829472. Its totient is φ = 6355554863976.

The previous prime is 11122221012011. The next prime is 11122221012031. The reversal of 11122221012021 is 12021012222111.

11122221012021 is a `hidden beast` number, since 111 + 222 + 210 + 120 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11122221012011) and next prime (11122221012031).

It is not a de Polignac number, because 11122221012021 - 2⁹ = 11122221011509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11122221011985 and 11122221012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122221012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88271595271 + ... + 88271595396.

Almost surely, 2^{11122221012021} is an apocalyptic number.

It is an amenable number.

11122221012021 is a deficient number, since it is larger than the sum of its proper divisors (7238270817451).

11122221012021 is a wasteful number, since it uses less digits than its factorization.

11122221012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176543190680 (or 176543190677 counting only the distinct ones).

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

Adding to 11122221012021 its reverse (12021012222111), we get a palindrome (23143233234132).

The spelling of 11122221012021 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, twelve thousand, twenty-one".