11030311021021 has 8 divisors (see below), whose sum is σ = 11412671077080. Its totient is φ = 10648084598592.

The previous prime is 11030311021013. The next prime is 11030311021117. The reversal of 11030311021021 is 12012011303011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19289043225 + 11011021977796 = 138885^2 + 3318286^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11030311021021 - 2³ = 11030311021013 is a prime.

It is a super-2 number, since 2×11030311021021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11030311020986 and 11030311021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11030311021721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33240450 + ... + 33570643.

It is an arithmetic number, because the mean of its divisors is an integer number (1426583884635).

Almost surely, 2^{11030311021021} is an apocalyptic number.

It is an amenable number.

11030311021021 is a deficient number, since it is larger than the sum of its proper divisors (382360056059).

11030311021021 is an equidigital number, since it uses as much as digits as its factorization.

11030311021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66816815.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11030311021021 its reverse (12012011303011), we get a palindrome (23042322324032).

The spelling of 11030311021021 in words is "eleven trillion, thirty billion, three hundred eleven million, twenty-one thousand, twenty-one".