11102021021221 has 8 divisors (see below), whose sum is σ = 11956074084864. Its totient is φ = 10247975307120.

The previous prime is 11102021021111. The next prime is 11102021021251. The reversal of 11102021021221 is 12212012020111.

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 11102021021221 - 2³⁷ = 10964582067749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102021021195 and 11102021021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102021021251) 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, 1528320 + ... + 4953766.

It is an arithmetic number, because the mean of its divisors is an integer number (1494509260608).

Almost surely, 2^{11102021021221} is an apocalyptic number.

It is an amenable number.

11102021021221 is a deficient number, since it is larger than the sum of its proper divisors (854053063643).

11102021021221 is a wasteful number, since it uses less digits than its factorization.

11102021021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674771.

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

Adding to 11102021021221 its reverse (12212012020111), we get a palindrome (23314033041332).

The spelling of 11102021021221 in words is "eleven trillion, one hundred two billion, twenty-one million, twenty-one thousand, two hundred twenty-one".