22101121010221 has 4 divisors (see below), whose sum is σ = 24110313829344. Its totient is φ = 20091928191100.

The previous prime is 22101121010123. The next prime is 22101121010249. The reversal of 22101121010221 is 12201012110122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22101121010221 - 2²³ = 22101112621613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22101121010195 and 22101121010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101121017221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004596409545 + ... + 1004596409566.

It is an arithmetic number, because the mean of its divisors is an integer number (6027578457336).

Almost surely, 2^{22101121010221} is an apocalyptic number.

It is an amenable number.

22101121010221 is a deficient number, since it is larger than the sum of its proper divisors (2009192819123).

22101121010221 is a wasteful number, since it uses less digits than its factorization.

22101121010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009192819122.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22101121010221 its reverse (12201012110122), we get a palindrome (34302133120343).

The spelling of 22101121010221 in words is "twenty-two trillion, one hundred one billion, one hundred twenty-one million, ten thousand, two hundred twenty-one".