11211002021021 has 8 divisors (see below), whose sum is σ = 12253568702304. Its totient is φ = 10172332786320.

The previous prime is 11211002020957. The next prime is 11211002021041. The reversal of 11211002021021 is 12012020011211.

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 11211002021021 - 2⁶ = 11211002020957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211002020987 and 11211002021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211002021041) 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, 974355626 + ... + 974367131.

It is an arithmetic number, because the mean of its divisors is an integer number (1531696087788).

Almost surely, 2^{11211002021021} is an apocalyptic number.

11211002021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211002021021 is a deficient number, since it is larger than the sum of its proper divisors (1042566681283).

11211002021021 is a wasteful number, since it uses less digits than its factorization.

11211002021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948723291.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211002021021 its reverse (12012020011211), we get a palindrome (23223022032232).

The spelling of 11211002021021 in words is "eleven trillion, two hundred eleven billion, two million, twenty-one thousand, twenty-one".