2021221120012 has 48 divisors (see below), whose sum is σ = 3732629927040. Its totient is φ = 955024342272.

The previous prime is 2021221119979. The next prime is 2021221120033. The reversal of 2021221120012 is 2100211221202.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 64545663 + ... + 64576969.

It is an arithmetic number, because the mean of its divisors is an integer number (77763123480).

Almost surely, 2^{2021221120012} is an apocalyptic number.

It is an amenable number.

2021221120012 is a deficient number, since it is larger than the sum of its proper divisors (1711408807028).

2021221120012 is a wasteful number, since it uses less digits than its factorization.

2021221120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33430 (or 33428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021221120012 its reverse (2100211221202), we get a palindrome (4121432341214).

The spelling of 2021221120012 in words is "two trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, twelve".