11022112421 has 2 divisors, whose sum is σ = 11022112422. Its totient is φ = 11022112420.

The previous prime is 11022112411. The next prime is 11022112427. The reversal of 11022112421 is 12421122011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6058909921 + 4963202500 = 77839^2 + 70450^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022112421 - 2⁶ = 11022112357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11022112421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11022112427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511056210 + 5511056211.

It is an arithmetic number, because the mean of its divisors is an integer number (5511056211).

Almost surely, 2^11022112421 is an apocalyptic number.

It is an amenable number.

11022112421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11022112421 is an equidigital number, since it uses as much as digits as its factorization.

11022112421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11022112421 its reverse (12421122011), we get a palindrome (23443234432).

The spelling of 11022112421 in words is "eleven billion, twenty-two million, one hundred twelve thousand, four hundred twenty-one".