22001212212149 has 2 divisors, whose sum is σ = 22001212212150. Its totient is φ = 22001212212148.

The previous prime is 22001212212131. The next prime is 22001212212181. The reversal of 22001212212149 is 94121221210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21138449889649 + 862762322500 = 4597657^2 + 928850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001212212149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001212292149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000606106074 + 11000606106075.

It is an arithmetic number, because the mean of its divisors is an integer number (11000606106075).

Almost surely, 2^{22001212212149} is an apocalyptic number.

It is an amenable number.

22001212212149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001212212149 is an equidigital number, since it uses as much as digits as its factorization.

22001212212149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 22001212212149 in words is "twenty-two trillion, one billion, two hundred twelve million, two hundred twelve thousand, one hundred forty-nine".