20120221121001 has 8 divisors (see below), whose sum is σ = 26961770347200. Its totient is φ = 13346076321072.

The previous prime is 20120221120891. The next prime is 20120221121017. The reversal of 20120221121001 is 10012112202102.

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

It is not a de Polignac number, because 20120221121001 - 2²³ = 20120212732393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120221121401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16851105870 + ... + 16851107063.

It is an arithmetic number, because the mean of its divisors is an integer number (3370221293400).

Almost surely, 2^{20120221121001} is an apocalyptic number.

It is an amenable number.

20120221121001 is a deficient number, since it is larger than the sum of its proper divisors (6841549226199).

20120221121001 is a wasteful number, since it uses less digits than its factorization.

20120221121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33702213135.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20120221121001 its reverse (10012112202102), we get a palindrome (30132333323103).

The spelling of 20120221121001 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one".