22021110121 has 8 divisors (see below), whose sum is σ = 22737521664. Its totient is φ = 21305076960.

The previous prime is 22021110113. The next prime is 22021110131. The reversal of 22021110121 is 12101112022.

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 22021110121 - 2³ = 22021110113 is a prime.

It is a super-2 number, since 2×22021110121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26160 + ... + 211486.

It is an arithmetic number, because the mean of its divisors is an integer number (2842190208).

Almost surely, 2^22021110121 is an apocalyptic number.

It is an amenable number.

22021110121 is a deficient number, since it is larger than the sum of its proper divisors (716411543).

22021110121 is a wasteful number, since it uses less digits than its factorization.

22021110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189191.

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

Adding to 22021110121 its reverse (12101112022), we get a palindrome (34122222143).

The spelling of 22021110121 in words is "twenty-two billion, twenty-one million, one hundred ten thousand, one hundred twenty-one".