1220120212203 has 32 divisors (see below), whose sum is σ = 1812142745600. Its totient is φ = 811364752800.

The previous prime is 1220120212183. The next prime is 1220120212211. The reversal of 1220120212203 is 3022120210221.

It is a de Polignac number, because none of the positive numbers 2^k-1220120212203 is a prime.

It is a super-2 number, since 2×1220120212203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220120212403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22336038 + ... + 22390596.

It is an arithmetic number, because the mean of its divisors is an integer number (56629460800).

Almost surely, 2^{1220120212203} is an apocalyptic number.

1220120212203 is a deficient number, since it is larger than the sum of its proper divisors (592022533397).

1220120212203 is a wasteful number, since it uses less digits than its factorization.

1220120212203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56640 (or 56634 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1220120212203 its reverse (3022120210221), we get a palindrome (4242240422424).

The spelling of 1220120212203 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twelve thousand, two hundred three".