1220002000051 has 2 divisors, whose sum is σ = 1220002000052. Its totient is φ = 1220002000050.

The previous prime is 1220002000013. The next prime is 1220002000069. The reversal of 1220002000051 is 1500002000221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220002000051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220001999995 and 1220002000040.

It is not a weakly prime, because it can be changed into another prime (1220002000751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610001000025 + 610001000026.

It is an arithmetic number, because the mean of its divisors is an integer number (610001000026).

Almost surely, 2^{1220002000051} is an apocalyptic number.

1220002000051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220002000051 is an equidigital number, since it uses as much as digits as its factorization.

1220002000051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 13.

Adding to 1220002000051 its reverse (1500002000221), we get a palindrome (2720004000272).

The spelling of 1220002000051 in words is "one trillion, two hundred twenty billion, two million, fifty-one", and thus it is an aban number.