11021111654431 has 2 divisors, whose sum is σ = 11021111654432. Its totient is φ = 11021111654430.

The previous prime is 11021111654351. The next prime is 11021111654447. The reversal of 11021111654431 is 13445611112011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11021111654431 - 2³¹ = 11018964170783 is a prime.

It is a super-2 number, since 2×11021111654431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11021111654393 and 11021111654402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021111634431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510555827215 + 5510555827216.

It is an arithmetic number, because the mean of its divisors is an integer number (5510555827216).

Almost surely, 2^{11021111654431} is an apocalyptic number.

11021111654431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021111654431 is an equidigital number, since it uses as much as digits as its factorization.

11021111654431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

Adding to 11021111654431 its reverse (13445611112011), we get a palindrome (24466722766442).

The spelling of 11021111654431 in words is "eleven trillion, twenty-one billion, one hundred eleven million, six hundred fifty-four thousand, four hundred thirty-one".