22012021010221 has 16 divisors (see below), whose sum is σ = 24879906216000. Its totient is φ = 19290754201600.

The previous prime is 22012021010197. The next prime is 22012021010233. The reversal of 22012021010221 is 12201012021022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22012021010221 - 2⁴³ = 13215927988013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22012021010195 and 22012021010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012021010521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53620171 + ... + 54029128.

It is an arithmetic number, because the mean of its divisors is an integer number (1554994138500).

Almost surely, 2^{22012021010221} is an apocalyptic number.

It is an amenable number.

22012021010221 is a deficient number, since it is larger than the sum of its proper divisors (2867885205779).

22012021010221 is a wasteful number, since it uses less digits than its factorization.

22012021010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107649980.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22012021010221 its reverse (12201012021022), we get a palindrome (34213033031243).

The spelling of 22012021010221 in words is "twenty-two trillion, twelve billion, twenty-one million, ten thousand, two hundred twenty-one".