11001011121021 has 8 divisors (see below), whose sum is σ = 14797820269440. Its totient is φ = 7269104693312.

The previous prime is 11001011121011. The next prime is 11001011121031. The reversal of 11001011121021 is 12012111010011.

It is an interprime number because it is at equal distance from previous prime (11001011121011) and next prime (11001011121031).

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 11001011121021 - 2⁵ = 11001011120989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11001011120988 and 11001011121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001011121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16225679781 + ... + 16225680458.

It is an arithmetic number, because the mean of its divisors is an integer number (1849727533680).

Almost surely, 2^{11001011121021} is an apocalyptic number.

It is an amenable number.

11001011121021 is a deficient number, since it is larger than the sum of its proper divisors (3796809148419).

11001011121021 is a wasteful number, since it uses less digits than its factorization.

11001011121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32451360355.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11001011121021 its reverse (12012111010011), we get a palindrome (23013122131032).

The spelling of 11001011121021 in words is "eleven trillion, one billion, eleven million, one hundred twenty-one thousand, twenty-one".