20221121010012 has 144 divisors (see below), whose sum is σ = 53135559859200. Its totient is φ = 5949008061696.

The previous prime is 20221121010001. The next prime is 20221121010037. The reversal of 20221121010012 is 21001012112202.

It is a junction number, because it is equal to n+sod(n) for n = 20221121009973 and 20221121010000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12764989 + ... + 14261387.

Almost surely, 2^{20221121010012} 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 20221121010012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26567779929600).

20221121010012 is an abundant number, since it is smaller than the sum of its proper divisors (32914438849188).

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

20221121010012 is a wasteful number, since it uses less digits than its factorization.

20221121010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496580 (or 1496549 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20221121010012 its reverse (21001012112202), we get a palindrome (41222133122214).

The spelling of 20221121010012 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, ten thousand, twelve".