11211000022121 has 8 divisors (see below), whose sum is σ = 11544789246144. Its totient is φ = 10880532084240.

The previous prime is 11211000022097. The next prime is 11211000022151. The reversal of 11211000022121 is 12122000011211.

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 11211000022121 - 2¹⁸ = 11210999759977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211000022096 and 11211000022105.

It is not an unprimeable number, because it can be changed into a prime (11211000022151) 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, 830314685 + ... + 830328186.

It is an arithmetic number, because the mean of its divisors is an integer number (1443098655768).

Almost surely, 2^{11211000022121} is an apocalyptic number.

It is an amenable number.

11211000022121 is a deficient number, since it is larger than the sum of its proper divisors (333789224023).

11211000022121 is a wasteful number, since it uses less digits than its factorization.

11211000022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660643071.

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

Adding to 11211000022121 its reverse (12122000011211), we get a palindrome (23333000033332).

The spelling of 11211000022121 in words is "eleven trillion, two hundred eleven billion, twenty-two thousand, one hundred twenty-one".