22131002301221 has 16 divisors (see below), whose sum is σ = 24552431700480. Its totient is φ = 19777835092080.

The previous prime is 22131002301179. The next prime is 22131002301241. The reversal of 22131002301221 is 12210320013122.

It is a cyclic number.

It is not a de Polignac number, because 22131002301221 - 2⁶ = 22131002301157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22131002301193 and 22131002301202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131002301241) 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, 64473770 + ... + 64816116.

It is an arithmetic number, because the mean of its divisors is an integer number (1534526981280).

Almost surely, 2^{22131002301221} is an apocalyptic number.

It is an amenable number.

22131002301221 is a deficient number, since it is larger than the sum of its proper divisors (2421429399259).

22131002301221 is a wasteful number, since it uses less digits than its factorization.

22131002301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442024.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 22131002301221 its reverse (12210320013122), we get a palindrome (34341322314343).

The spelling of 22131002301221 in words is "twenty-two trillion, one hundred thirty-one billion, two million, three hundred one thousand, two hundred twenty-one".