22210000012221 has 16 divisors (see below), whose sum is σ = 33855713892864. Its totient is φ = 12686964447024.

The previous prime is 22210000012217. The next prime is 22210000012241. The reversal of 22210000012221 is 12221000001222.

It is not a de Polignac number, because 22210000012221 - 2² = 22210000012217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22210000012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210000012241) 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, 185944351 + ... + 186063756.

It is an arithmetic number, because the mean of its divisors is an integer number (2115982118304).

Almost surely, 2^{22210000012221} is an apocalyptic number.

22210000012221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22210000012221 is a deficient number, since it is larger than the sum of its proper divisors (11645713880643).

22210000012221 is a wasteful number, since it uses less digits than its factorization.

22210000012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372010960.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22210000012221 its reverse (12221000001222), we get a palindrome (34431000013443).

The spelling of 22210000012221 in words is "twenty-two trillion, two hundred ten billion, twelve thousand, two hundred twenty-one".