1822208621251 has 2 divisors, whose sum is σ = 1822208621252. Its totient is φ = 1822208621250.

The previous prime is 1822208621173. The next prime is 1822208621257. The reversal of 1822208621251 is 1521268022281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1822208621251 is a prime.

It is a super-2 number, since 2×1822208621251² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1822208621257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911104310625 + 911104310626.

It is an arithmetic number, because the mean of its divisors is an integer number (911104310626).

Almost surely, 2^{1822208621251} is an apocalyptic number.

1822208621251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822208621251 is an equidigital number, since it uses as much as digits as its factorization.

1822208621251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 1822208621251 in words is "one trillion, eight hundred twenty-two billion, two hundred eight million, six hundred twenty-one thousand, two hundred fifty-one".