2212120220929 has 2 divisors, whose sum is σ = 2212120220930. Its totient is φ = 2212120220928.

The previous prime is 2212120220927. The next prime is 2212120220939. The reversal of 2212120220929 is 9290220212122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2139315769600 + 72804451329 = 1462640^2 + 269823^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212120220929 - 2¹ = 2212120220927 is a prime.

Together with 2212120220927, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2212120220894 and 2212120220903.

It is not a weakly prime, because it can be changed into another prime (2212120220923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106060110464 + 1106060110465.

It is an arithmetic number, because the mean of its divisors is an integer number (1106060110465).

Almost surely, 2^{2212120220929} is an apocalyptic number.

It is an amenable number.

2212120220929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212120220929 is an equidigital number, since it uses as much as digits as its factorization.

2212120220929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 2212120220929 in words is "two trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty thousand, nine hundred twenty-nine".