22001212212131 has 2 divisors, whose sum is σ = 22001212212132. Its totient is φ = 22001212212130.

The previous prime is 22001212212121. The next prime is 22001212212149. The reversal of 22001212212131 is 13121221210022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001212212131 - 2³⁴ = 21984032342947 is a prime.

It is a super-2 number, since 2×22001212212131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22001212212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000606106065 + 11000606106066.

It is an arithmetic number, because the mean of its divisors is an integer number (11000606106066).

Almost surely, 2^{22001212212131} is an apocalyptic number.

22001212212131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001212212131 is an equidigital number, since it uses as much as digits as its factorization.

22001212212131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22001212212131 its reverse (13121221210022), we get a palindrome (35122433422153).

The spelling of 22001212212131 in words is "twenty-two trillion, one billion, two hundred twelve million, two hundred twelve thousand, one hundred thirty-one".