22021121021112 has 128 divisors (see below), whose sum is σ = 63388762920000. Its totient is φ = 7074973237248.

The previous prime is 22021121021057. The next prime is 22021121021161. The reversal of 22021121021112 is 21112012112022.

22021121021112 is a `hidden beast` number, since 2 + 20 + 211 + 210 + 211 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 567964 + ... + 6660692.

Almost surely, 2^{22021121021112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021121021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31694381460000).

22021121021112 is an abundant number, since it is smaller than the sum of its proper divisors (41367641898888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021121021112 is a wasteful number, since it uses less digits than its factorization.

22021121021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093350 (or 6093340 counting only the distinct ones).

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

Adding to 22021121021112 its reverse (21112012112022), we get a palindrome (43133133133134).

The spelling of 22021121021112 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, twenty-one thousand, one hundred twelve".