1220002120103 has 4 divisors (see below), whose sum is σ = 1313848437048. Its totient is φ = 1126155803160.

The previous prime is 1220002119997. The next prime is 1220002120121. The reversal of 1220002120103 is 3010212000221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220002120103 - 2²⁸ = 1219733684647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220002120123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46923158453 + ... + 46923158478.

It is an arithmetic number, because the mean of its divisors is an integer number (328462109262).

Almost surely, 2^{1220002120103} is an apocalyptic number.

1220002120103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220002120103 is a deficient number, since it is larger than the sum of its proper divisors (93846316945).

1220002120103 is an equidigital number, since it uses as much as digits as its factorization.

1220002120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93846316944.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1220002120103 its reverse (3010212000221), we get a palindrome (4230214120324).

The spelling of 1220002120103 in words is "one trillion, two hundred twenty billion, two million, one hundred twenty thousand, one hundred three".