1220001011003 has 2 divisors, whose sum is σ = 1220001011004. Its totient is φ = 1220001011002.

The previous prime is 1220001010999. The next prime is 1220001011057. The reversal of 1220001011003 is 3001101000221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220001011003 - 2² = 1220001010999 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220001011503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610000505501 + 610000505502.

It is an arithmetic number, because the mean of its divisors is an integer number (610000505502).

Almost surely, 2^{1220001011003} is an apocalyptic number.

1220001011003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220001011003 is an equidigital number, since it uses as much as digits as its factorization.

1220001011003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1220001011003 its reverse (3001101000221), we get a palindrome (4221102011224).

The spelling of 1220001011003 in words is "one trillion, two hundred twenty billion, one million, eleven thousand, three".