1201021220003 has 16 divisors (see below), whose sum is σ = 1387319361120. Its totient is φ = 1027579507200.

The previous prime is 1201021219973. The next prime is 1201021220029. The reversal of 1201021220003 is 3000221201021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201021220003 - 2²⁰ = 1201020171427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201021220003.

It is not an unprimeable number, because it can be changed into a prime (1201021220053) 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, 7344713 + ... + 7506453.

It is an arithmetic number, because the mean of its divisors is an integer number (86707460070).

Almost surely, 2^{1201021220003} is an apocalyptic number.

1201021220003 is a deficient number, since it is larger than the sum of its proper divisors (186298141117).

1201021220003 is a wasteful number, since it uses less digits than its factorization.

1201021220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201478.

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

Adding to 1201021220003 its reverse (3000221201021), we get a palindrome (4201242421024).

The spelling of 1201021220003 in words is "one trillion, two hundred one billion, twenty-one million, two hundred twenty thousand, three".