12101221000010 has 8 divisors (see below), whose sum is σ = 21782197800036. Its totient is φ = 4840488400000.

The previous prime is 12101220999929. The next prime is 12101221000013. The reversal of 12101221000010 is 1000012210121.

It can be written as a sum of positive squares in 2 ways, for example, as 12085892331529 + 15328668481 = 3476477^2 + 123809^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12101220999955 and 12101221000000.

It is not an unprimeable number, because it can be changed into a prime (12101221000013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 605061049991 + ... + 605061050010.

Almost surely, 2^{12101221000010} is an apocalyptic number.

12101221000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12101221000010 is a deficient number, since it is larger than the sum of its proper divisors (9680976800026).

12101221000010 is a wasteful number, since it uses less digits than its factorization.

12101221000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210122100008.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12101221000010 its reverse (1000012210121), we get a palindrome (13101233210131).

The spelling of 12101221000010 in words is "twelve trillion, one hundred one billion, two hundred twenty-one million, ten", and thus it is an aban number.