20220121002012 has 24 divisors (see below), whose sum is σ = 47341307200656. Its totient is φ = 6717036782208.

The previous prime is 20220121001957. The next prime is 20220121002013. The reversal of 20220121002012 is 21020012102202.

It is a junction number, because it is equal to n+sod(n) for n = 20220121001982 and 20220121002000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220121002013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2875440313 + ... + 2875447344.

It is an arithmetic number, because the mean of its divisors is an integer number (1972554466694).

Almost surely, 2^{20220121002012} is an apocalyptic number.

It is an amenable number.

20220121002012 is an abundant number, since it is smaller than the sum of its proper divisors (27121186198644).

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

20220121002012 is a wasteful number, since it uses less digits than its factorization.

20220121002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750887957 (or 5750887955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20220121002012 its reverse (21020012102202), we get a palindrome (41240133104214).

The spelling of 20220121002012 in words is "twenty trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, twelve".