1122212022021 has 16 divisors (see below), whose sum is σ = 1664303142720. Its totient is φ = 747346281840.

The previous prime is 1122212021927. The next prime is 1122212022023. The reversal of 1122212022021 is 1202202122211.

It is a happy number.

It is not a de Polignac number, because 1122212022021 - 2²⁶ = 1122144913157 is a prime.

It is a super-2 number, since 2×1122212022021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1122212021985 and 1122212022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122212022023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22059295 + ... + 22110108.

It is an arithmetic number, because the mean of its divisors is an integer number (104018946420).

Almost surely, 2^{1122212022021} is an apocalyptic number.

It is an amenable number.

1122212022021 is a deficient number, since it is larger than the sum of its proper divisors (542091120699).

1122212022021 is an equidigital number, since it uses as much as digits as its factorization.

1122212022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44170353 (or 44170347 counting only the distinct ones).

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

Adding to 1122212022021 its reverse (1202202122211), we get a palindrome (2324414144232).

The spelling of 1122212022021 in words is "one trillion, one hundred twenty-two billion, two hundred twelve million, twenty-two thousand, twenty-one".