12121022021101 has 12 divisors (see below), whose sum is σ = 14100023861760. Its totient is φ = 10389403626840.

The previous prime is 12121022020981. The next prime is 12121022021111. The reversal of 12121022021101 is 10112022012121.

It is not a de Polignac number, because 12121022021101 - 2²⁵ = 12120988466669 is a prime.

It is a super-3 number, since 3×12121022021101³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121022021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17510740 + ... + 18189778.

It is an arithmetic number, because the mean of its divisors is an integer number (1175001988480).

Almost surely, 2^{12121022021101} is an apocalyptic number.

It is an amenable number.

12121022021101 is a deficient number, since it is larger than the sum of its proper divisors (1979001840659).

12121022021101 is an equidigital number, since it uses as much as digits as its factorization.

12121022021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043344 (or 1043337 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121022021101 its reverse (10112022012121), we get a palindrome (22233044033222).

The spelling of 12121022021101 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, twenty-one thousand, one hundred one".