22211211120021 has 96 divisors (see below), whose sum is σ = 41430646333440. Its totient is φ = 11127975868800.

The previous prime is 22211211120017. The next prime is 22211211120037. The reversal of 22211211120021 is 12002111211222.

22211211120021 is a `hidden beast` number, since 22 + 211 + 211 + 1 + 200 + 21 = 666.

It is not a de Polignac number, because 22211211120021 - 2² = 22211211120017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211211119976 and 22211211120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211211120071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4530190 + ... + 8058848.

It is an arithmetic number, because the mean of its divisors is an integer number (431569232640).

Almost surely, 2^{22211211120021} is an apocalyptic number.

22211211120021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22211211120021 is a deficient number, since it is larger than the sum of its proper divisors (19219435213419).

22211211120021 is a wasteful number, since it uses less digits than its factorization.

22211211120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529007 (or 3529004 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22211211120021 its reverse (12002111211222), we get a palindrome (34213322331243).

The spelling of 22211211120021 in words is "twenty-two trillion, two hundred eleven billion, two hundred eleven million, one hundred twenty thousand, twenty-one".