22001121211 has 8 divisors (see below), whose sum is σ = 22026592224. Its totient is φ = 21975668160.

The previous prime is 22001121187. The next prime is 22001121223. The reversal of 22001121211 is 11212110022.

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 22001121211 - 2¹³ = 22001113019 is a prime.

It is a super-2 number, since 2×22001121211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001121191 and 22001121200.

It is not an unprimeable number, because it can be changed into a prime (22001121911) 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, 5666991 + ... + 5670871.

It is an arithmetic number, because the mean of its divisors is an integer number (2753324028).

Almost surely, 2^22001121211 is an apocalyptic number.

22001121211 is a deficient number, since it is larger than the sum of its proper divisors (25471013).

22001121211 is a wasteful number, since it uses less digits than its factorization.

22001121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22001121211 its reverse (11212110022), we get a palindrome (33213231233).

The spelling of 22001121211 in words is "twenty-two billion, one million, one hundred twenty-one thousand, two hundred eleven".