2000120001221 has 8 divisors (see below), whose sum is σ = 2025489482880. Its totient is φ = 1974751807392.

The previous prime is 2000120001169. The next prime is 2000120001241. The reversal of 2000120001221 is 1221000210002.

It is a happy number.

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 2000120001221 - 2¹⁸ = 2000119739077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000120001241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3022886 + ... + 3624648.

It is an arithmetic number, because the mean of its divisors is an integer number (253186185360).

Almost surely, 2^{2000120001221} is an apocalyptic number.

It is an amenable number.

2000120001221 is a deficient number, since it is larger than the sum of its proper divisors (25369481659).

2000120001221 is an equidigital number, since it uses as much as digits as its factorization.

2000120001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643915.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2000120001221 its reverse (1221000210002), we get a palindrome (3221120211223).

The spelling of 2000120001221 in words is "two trillion, one hundred twenty million, one thousand, two hundred twenty-one".