2122212021949 has 2 divisors, whose sum is σ = 2122212021950. Its totient is φ = 2122212021948.

The previous prime is 2122212021929. The next prime is 2122212021961. The reversal of 2122212021949 is 9491202122212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2122140957049 + 71064900 = 1456757^2 + 8430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122212021949 - 2⁷ = 2122212021821 is a prime.

It is a super-2 number, since 2×2122212021949² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122212021929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061106010974 + 1061106010975.

It is an arithmetic number, because the mean of its divisors is an integer number (1061106010975).

Almost surely, 2^{2122212021949} is an apocalyptic number.

It is an amenable number.

2122212021949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122212021949 is an equidigital number, since it uses as much as digits as its factorization.

2122212021949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 2122212021949 in words is "two trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, nine hundred forty-nine".