20120111102021 has 8 divisors (see below), whose sum is σ = 22994713289664. Its totient is φ = 17245584064800.

The previous prime is 20120111101957. The next prime is 20120111102029. The reversal of 20120111102021 is 12020111102102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20120111102021 - 2⁶ = 20120111101957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120111101987 and 20120111102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120111102029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18212720 + ... + 19285833.

It is an arithmetic number, because the mean of its divisors is an integer number (2874339161208).

Almost surely, 2^{20120111102021} is an apocalyptic number.

It is an amenable number.

20120111102021 is a deficient number, since it is larger than the sum of its proper divisors (2874602187643).

20120111102021 is an equidigital number, since it uses as much as digits as its factorization.

20120111102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37575211.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20120111102021 its reverse (12020111102102), we get a palindrome (32140222204123).

The spelling of 20120111102021 in words is "twenty trillion, one hundred twenty billion, one hundred eleven million, one hundred two thousand, twenty-one".