12211401021 has 8 divisors (see below), whose sum is σ = 16628290944. Its totient is φ = 7967722560.

The previous prime is 12211400987. The next prime is 12211401031. The reversal of 12211401021 is 12010411221.

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

It is not a de Polignac number, because 12211401021 - 2²³ = 12203012413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211401031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43302700 + ... + 43302981.

It is an arithmetic number, because the mean of its divisors is an integer number (2078536368).

Almost surely, 2^12211401021 is an apocalyptic number.

It is an amenable number.

12211401021 is a deficient number, since it is larger than the sum of its proper divisors (4416889923).

12211401021 is an equidigital number, since it uses as much as digits as its factorization.

12211401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86605731.

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

Adding to 12211401021 its reverse (12010411221), we get a palindrome (24221812242).

The spelling of 12211401021 in words is "twelve billion, two hundred eleven million, four hundred one thousand, twenty-one".