11023912421 has 2 divisors, whose sum is σ = 11023912422. Its totient is φ = 11023912420.

The previous prime is 11023912409. The next prime is 11023912441. The reversal of 11023912421 is 12421932011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8076616900 + 2947295521 = 89870^2 + 54289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11023912421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11023912441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511956210 + 5511956211.

It is an arithmetic number, because the mean of its divisors is an integer number (5511956211).

Almost surely, 2^11023912421 is an apocalyptic number.

It is an amenable number.

11023912421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11023912421 is an equidigital number, since it uses as much as digits as its factorization.

11023912421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 11023912421 in words is "eleven billion, twenty-three million, nine hundred twelve thousand, four hundred twenty-one".