201220121003 has 8 divisors (see below), whose sum is σ = 219555372096. Its totient is φ = 182891955400.

The previous prime is 201220120991. The next prime is 201220121023. The reversal of 201220121003 is 300121022102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201220121003 - 2¹⁰ = 201220119979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201220121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711901 + ... + 1825662.

It is an arithmetic number, because the mean of its divisors is an integer number (27444421512).

Almost surely, 2^201220121003 is an apocalyptic number.

201220121003 is a deficient number, since it is larger than the sum of its proper divisors (18335251093).

201220121003 is a wasteful number, since it uses less digits than its factorization.

201220121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542745.

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

Adding to 201220121003 its reverse (300121022102), we get a palindrome (501341143105).

It can be divided in two parts, 201220 and 121003, that added together give a palindrome (322223).

The spelling of 201220121003 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, three".