11012221122021 has 24 divisors (see below), whose sum is σ = 18179032376960. Its totient is φ = 6292653591456.

The previous prime is 11012221121987. The next prime is 11012221122043. The reversal of 11012221122021 is 12022112221011.

11012221122021 is a `hidden beast` number, since 110 + 122 + 211 + 220 + 2 + 1 = 666.

It is not a de Polignac number, because 11012221122021 - 2²¹ = 11012219024869 is a prime.

It is a super-2 number, since 2×11012221122021² (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 = 11012221121985 and 11012221122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012221122061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9826440 + ... + 10889598.

Almost surely, 2^{11012221122021} is an apocalyptic number.

It is an amenable number.

11012221122021 is a deficient number, since it is larger than the sum of its proper divisors (7166811254939).

11012221122021 is a wasteful number, since it uses less digits than its factorization.

11012221122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227585 (or 1227582 counting only the distinct ones).

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

Adding to 11012221122021 its reverse (12022112221011), we get a palindrome (23034333343032).

The spelling of 11012221122021 in words is "eleven trillion, twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".