2001212220203 has 8 divisors (see below), whose sum is σ = 2287168246272. Its totient is φ = 1715273335656.

The previous prime is 2001212220187. The next prime is 2001212220229. The reversal of 2001212220203 is 3020222121002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001212220203 - 2⁴ = 2001212220187 is a prime.

It is a super-2 number, since 2×2001212220203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001212220503) 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, 4034225 + ... + 4503042.

It is an arithmetic number, because the mean of its divisors is an integer number (285896030784).

Almost surely, 2^{2001212220203} is an apocalyptic number.

2001212220203 is a deficient number, since it is larger than the sum of its proper divisors (285956026069).

2001212220203 is an equidigital number, since it uses as much as digits as its factorization.

2001212220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570761.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2001212220203 its reverse (3020222121002), we get a palindrome (5021434341205).

The spelling of 2001212220203 in words is "two trillion, one billion, two hundred twelve million, two hundred twenty thousand, two hundred three".