12111001212021 has 16 divisors (see below), whose sum is σ = 16816942224000. Its totient is φ = 7743267603008.

The previous prime is 12111001211987. The next prime is 12111001212029. The reversal of 12111001212021 is 12021210011121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12111001212021 - 2⁹ = 12111001211509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111001212029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467124321 + ... + 467150246.

It is an arithmetic number, because the mean of its divisors is an integer number (1051058889000).

Almost surely, 2^{12111001212021} is an apocalyptic number.

It is an amenable number.

12111001212021 is a deficient number, since it is larger than the sum of its proper divisors (4705941011979).

12111001212021 is a wasteful number, since it uses less digits than its factorization.

12111001212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934274748.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111001212021 its reverse (12021210011121), we get a palindrome (24132211223142).

The spelling of 12111001212021 in words is "twelve trillion, one hundred eleven billion, one million, two hundred twelve thousand, twenty-one".