22121221301331 has 16 divisors (see below), whose sum is σ = 31241556395424. Its totient is φ = 13874827810304.

The previous prime is 22121221301317. The next prime is 22121221301357. The reversal of 22121221301331 is 13310312212122.

It is a cyclic number.

It is not a de Polignac number, because 22121221301331 - 2¹⁴ = 22121221284947 is a prime.

It is a super-2 number, since 2×22121221301331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121221302331) 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 15 ways as a sum of consecutive naturals, for example, 80395416 + ... + 80670101.

It is an arithmetic number, because the mean of its divisors is an integer number (1952597274714).

Almost surely, 2^{22121221301331} is an apocalyptic number.

22121221301331 is a deficient number, since it is larger than the sum of its proper divisors (9120335094093).

22121221301331 is a wasteful number, since it uses less digits than its factorization.

22121221301331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161068230.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 22121221301331 its reverse (13310312212122), we get a palindrome (35431533513453).

The spelling of 22121221301331 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, three hundred one thousand, three hundred thirty-one".