1001222121003 has 16 divisors (see below), whose sum is σ = 1443379988736. Its totient is φ = 613681956000.

The previous prime is 1001222121001. The next prime is 1001222121019. The reversal of 1001222121003 is 3001212221001.

It is not a de Polignac number, because 1001222121003 - 2¹ = 1001222121001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001222121001) 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, 51130375 + ... + 51149952.

It is an arithmetic number, because the mean of its divisors is an integer number (90211249296).

Almost surely, 2^{1001222121003} is an apocalyptic number.

1001222121003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1001222121003 is a deficient number, since it is larger than the sum of its proper divisors (442157867733).

1001222121003 is a wasteful number, since it uses less digits than its factorization.

1001222121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102280594.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1001222121003 its reverse (3001212221001), we get a palindrome (4002434342004).

The spelling of 1001222121003 in words is "one trillion, one billion, two hundred twenty-two million, one hundred twenty-one thousand, three".