22211210020221 has 24 divisors (see below), whose sum is σ = 32274322554240. Its totient is φ = 14719325616576.

The previous prime is 22211210020213. The next prime is 22211210020267. The reversal of 22211210020221 is 12202001211222.

It is a happy number.

22211210020221 is a `hidden beast` number, since 2 + 2 + 211 + 210 + 0 + 20 + 221 = 666.

It is not a de Polignac number, because 22211210020221 - 2³ = 22211210020213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211210020194 and 22211210020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211210020291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7959496 + ... + 10381521.

It is an arithmetic number, because the mean of its divisors is an integer number (1344763439760).

Almost surely, 2^{22211210020221} is an apocalyptic number.

It is an amenable number.

22211210020221 is a deficient number, since it is larger than the sum of its proper divisors (10063112534019).

22211210020221 is a wasteful number, since it uses less digits than its factorization.

22211210020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18341825 (or 18341822 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22211210020221 its reverse (12202001211222), we get a palindrome (34413211231443).

The spelling of 22211210020221 in words is "twenty-two trillion, two hundred eleven billion, two hundred ten million, twenty thousand, two hundred twenty-one".