11022021212121 has 12 divisors (see below), whose sum is σ = 15920949091840. Its totient is φ = 7347897932760.

The previous prime is 11022021212119. The next prime is 11022021212123. The reversal of 11022021212121 is 12121212022011.

11022021212121 is a `hidden beast` number, since 110 + 220 + 2 + 1 + 212 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (11022021212119) and next prime (11022021212123).

It is not a de Polignac number, because 11022021212121 - 2¹ = 11022021212119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11022021212094 and 11022021212103.

It is not an unprimeable number, because it can be changed into a prime (11022021212123) 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, 9081385 + ... + 10223286.

Almost surely, 2^{11022021212121} is an apocalyptic number.

It is an amenable number.

11022021212121 is a deficient number, since it is larger than the sum of its proper divisors (4898927879719).

11022021212121 is a wasteful number, since it uses less digits than its factorization.

11022021212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19368116 (or 19368113 counting only the distinct ones).

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

Adding to 11022021212121 its reverse (12121212022011), we get a palindrome (23143233234132).

The spelling of 11022021212121 in words is "eleven trillion, twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred twenty-one".