1220202021003 has 16 divisors (see below), whose sum is σ = 1859443733760. Its totient is φ = 697225195296.

The previous prime is 1220202021001. The next prime is 1220202021013. The reversal of 1220202021003 is 3001202020221.

It is a happy number.

It is not a de Polignac number, because 1220202021003 - 2¹ = 1220202021001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220202021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922888 + ... + 1814421.

It is an arithmetic number, because the mean of its divisors is an integer number (116215233360).

Almost surely, 2^{1220202021003} is an apocalyptic number.

1220202021003 is a deficient number, since it is larger than the sum of its proper divisors (639241712757).

1220202021003 is a wasteful number, since it uses less digits than its factorization.

1220202021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758546.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1220202021003 its reverse (3001202020221), we get a palindrome (4221404041224).

The spelling of 1220202021003 in words is "one trillion, two hundred twenty billion, two hundred two million, twenty-one thousand, three".