2021222100012 has 12 divisors (see below), whose sum is σ = 4716184900056. Its totient is φ = 673740700000.

The previous prime is 2021222099977. The next prime is 2021222100017. The reversal of 2021222100012 is 2100012221202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2021222099964 and 2021222100000.

It is not an unprimeable number, because it can be changed into a prime (2021222100017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84217587489 + ... + 84217587512.

It is an arithmetic number, because the mean of its divisors is an integer number (393015408338).

Almost surely, 2^{2021222100012} is an apocalyptic number.

It is an amenable number.

2021222100012 is an abundant number, since it is smaller than the sum of its proper divisors (2694962800044).

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

2021222100012 is a wasteful number, since it uses less digits than its factorization.

2021222100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168435175008 (or 168435175006 counting only the distinct ones).

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

Adding to 2021222100012 its reverse (2100012221202), we get a palindrome (4121234321214).

The spelling of 2021222100012 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred thousand, twelve".