22011101120021 has 8 divisors (see below), whose sum is σ = 23708456042040. Its totient is φ = 20314345240512.

The previous prime is 22011101120017. The next prime is 22011101120051. The reversal of 22011101120021 is 12002110111022.

It can be written as a sum of positive squares in 4 ways, for example, as 8405441817796 + 13605659302225 = 2899214^2 + 3688585^2 .

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 22011101120021 - 2² = 22011101120017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011101119978 and 22011101120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011101120051) 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, 149684306 + ... + 149831283.

It is an arithmetic number, because the mean of its divisors is an integer number (2963557005255).

Almost surely, 2^{22011101120021} is an apocalyptic number.

It is an amenable number.

22011101120021 is a deficient number, since it is larger than the sum of its proper divisors (1697354922019).

22011101120021 is a wasteful number, since it uses less digits than its factorization.

22011101120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299521255.

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

Adding to 22011101120021 its reverse (12002110111022), we get a palindrome (34013211231043).

The spelling of 22011101120021 in words is "twenty-two trillion, eleven billion, one hundred one million, one hundred twenty thousand, twenty-one".