11021221210021 has 8 divisors (see below), whose sum is σ = 12023174941344. Its totient is φ = 10019271567120.

The previous prime is 11021221209991. The next prime is 11021221210031. The reversal of 11021221210021 is 12001212212011.

11021221210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11021221210021 - 2¹⁹ = 11021220685733 is a prime.

It is a super-3 number, since 3×11021221210021³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021221209977 and 11021221210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221210031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8354046 + ... + 9582928.

It is an arithmetic number, because the mean of its divisors is an integer number (1502896867668).

Almost surely, 2^{11021221210021} is an apocalyptic number.

11021221210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11021221210021 is a deficient number, since it is larger than the sum of its proper divisors (1001953731323).

11021221210021 is a wasteful number, since it uses less digits than its factorization.

11021221210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044211.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11021221210021 its reverse (12001212212011), we get a palindrome (23022433422032).

The spelling of 11021221210021 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, two hundred ten thousand, twenty-one".