22011020121 has 8 divisors (see below), whose sum is σ = 29367202144. Its totient is φ = 14664425760.

The previous prime is 22011020081. The next prime is 22011020123. The reversal of 22011020121 is 12102011022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22011020121 - 2⁹ = 22011019609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011020097 and 22011020106.

It is not an unprimeable number, because it can be changed into a prime (22011020123) 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, 2391556 + ... + 2400741.

It is an arithmetic number, because the mean of its divisors is an integer number (3670900268).

Almost surely, 2^22011020121 is an apocalyptic number.

It is an amenable number.

22011020121 is a deficient number, since it is larger than the sum of its proper divisors (7356182023).

22011020121 is a wasteful number, since it uses less digits than its factorization.

22011020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793831.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22011020121 its reverse (12102011022), we get a palindrome (34113031143).

Subtracting from 22011020121 its reverse (12102011022), we obtain a palindrome (9909009099).

The spelling of 22011020121 in words is "twenty-two billion, eleven million, twenty thousand, one hundred twenty-one".