1220211220203 has 48 divisors (see below), whose sum is σ = 1814198031360. Its totient is φ = 789861848832.

The previous prime is 1220211220201. The next prime is 1220211220213. The reversal of 1220211220203 is 3020221120221.

1220211220203 is a `hidden beast` number, since 1 + 220 + 21 + 1 + 220 + 203 = 666.

It is not a de Polignac number, because 1220211220203 - 2¹ = 1220211220201 is a prime.

It is a super-2 number, since 2×1220211220203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220211220201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54837226 + ... + 54859472.

It is an arithmetic number, because the mean of its divisors is an integer number (37795792320).

Almost surely, 2^{1220211220203} is an apocalyptic number.

1220211220203 is a deficient number, since it is larger than the sum of its proper divisors (593986811157).

1220211220203 is a wasteful number, since it uses less digits than its factorization.

1220211220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23128 (or 23125 counting only the distinct ones).

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

Adding to 1220211220203 its reverse (3020221120221), we get a palindrome (4240432340424).

The spelling of 1220211220203 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty thousand, two hundred three".