12021021212101 has 32 divisors (see below), whose sum is σ = 13607004620160. Its totient is φ = 10526949888000.

The previous prime is 12021021212021. The next prime is 12021021212111. The reversal of 12021021212101 is 10121212012021.

It is a cyclic number.

It is not a de Polignac number, because 12021021212101 - 2³⁹ = 11471265398213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021021212111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5412945 + ... + 7303561.

It is an arithmetic number, because the mean of its divisors is an integer number (425218894380).

Almost surely, 2^{12021021212101} is an apocalyptic number.

12021021212101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021021212101 is a deficient number, since it is larger than the sum of its proper divisors (1585983408059).

12021021212101 is a wasteful number, since it uses less digits than its factorization.

12021021212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890885.

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

Adding to 12021021212101 its reverse (10121212012021), we get a palindrome (22142233224122).

The spelling of 12021021212101 in words is "twelve trillion, twenty-one billion, twenty-one million, two hundred twelve thousand, one hundred one".