11021111121 has 8 divisors (see below), whose sum is σ = 14700356064. Its totient is φ = 7344636800.

The previous prime is 11021111119. The next prime is 11021111131. The reversal of 11021111121 is 12111112011.

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 11021111121 - 2¹ = 11021111119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021111097 and 11021111106.

It is not an unprimeable number, because it can be changed into a prime (11021111111) 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, 683355 + ... + 699296.

It is an arithmetic number, because the mean of its divisors is an integer number (1837544508).

Almost surely, 2^11021111121 is an apocalyptic number.

It is an amenable number.

11021111121 is a deficient number, since it is larger than the sum of its proper divisors (3679244943).

11021111121 is a wasteful number, since it uses less digits than its factorization.

11021111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385311.

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

Adding to 11021111121 its reverse (12111112011), we get a palindrome (23132223132).

The spelling of 11021111121 in words is "eleven billion, twenty-one million, one hundred eleven thousand, one hundred twenty-one".