11221211401 has 4 divisors (see below), whose sum is σ = 11379256704. Its totient is φ = 11063166100.

The previous prime is 11221211377. The next prime is 11221211459. The reversal of 11221211401 is 10411212211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10411212211 = 3209 ⋅3244379.

It is a cyclic number.

It is not a de Polignac number, because 11221211401 - 2¹⁷ = 11221080329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221211101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79022545 + ... + 79022686.

It is an arithmetic number, because the mean of its divisors is an integer number (2844814176).

Almost surely, 2^11221211401 is an apocalyptic number.

It is an amenable number.

11221211401 is a deficient number, since it is larger than the sum of its proper divisors (158045303).

11221211401 is an equidigital number, since it uses as much as digits as its factorization.

11221211401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158045302.

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

Adding to 11221211401 its reverse (10411212211), we get a palindrome (21632423612).

The spelling of 11221211401 in words is "eleven billion, two hundred twenty-one million, two hundred eleven thousand, four hundred one".