1220201503 has 16 divisors (see below), whose sum is σ = 1340103744. Its totient is φ = 1106265600.

The previous prime is 1220201473. The next prime is 1220201569. The reversal of 1220201503 is 3051020221.

It is a cyclic number.

It is not a de Polignac number, because 1220201503 - 2¹⁷ = 1220070431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220201803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53926 + ... + 73132.

It is an arithmetic number, because the mean of its divisors is an integer number (83756484).

Almost surely, 2^1220201503 is an apocalyptic number.

1220201503 is a deficient number, since it is larger than the sum of its proper divisors (119902241).

1220201503 is a wasteful number, since it uses less digits than its factorization.

1220201503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19362.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1220201503 is about 34931.3827811039. The cubic root of 1220201503 is about 1068.5885553110.

Adding to 1220201503 its reverse (3051020221), we get a palindrome (4271221724).

The spelling of 1220201503 in words is "one billion, two hundred twenty million, two hundred one thousand, five hundred three".