12201010221021 has 16 divisors (see below), whose sum is σ = 16328629614528. Its totient is φ = 8103723580800.

The previous prime is 12201010221017. The next prime is 12201010221041. The reversal of 12201010221021 is 12012201010221.

It is not a de Polignac number, because 12201010221021 - 2² = 12201010221017 is a prime.

It is a super-2 number, since 2×12201010221021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201010221041) 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 15 ways as a sum of consecutive naturals, for example, 1121920 + ... + 5065641.

It is an arithmetic number, because the mean of its divisors is an integer number (1020539350908).

Almost surely, 2^{12201010221021} is an apocalyptic number.

It is an amenable number.

12201010221021 is a deficient number, since it is larger than the sum of its proper divisors (4127619393507).

12201010221021 is a wasteful number, since it uses less digits than its factorization.

12201010221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190012.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12201010221021 its reverse (12012201010221), we get a palindrome (24213211231242).

The spelling of 12201010221021 in words is "twelve trillion, two hundred one billion, ten million, two hundred twenty-one thousand, twenty-one".