20200221112001 has 12 divisors (see below), whose sum is σ = 24256223377920. Its totient is φ = 16755943778280.

The previous prime is 20200221111979. The next prime is 20200221112007. The reversal of 20200221112001 is 10021112200202.

It is not a de Polignac number, because 20200221112001 - 2¹⁰ = 20200221110977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200221112007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6649182521 + ... + 6649185558.

It is an arithmetic number, because the mean of its divisors is an integer number (2021351948160).

Almost surely, 2^{20200221112001} is an apocalyptic number.

It is an amenable number.

20200221112001 is a deficient number, since it is larger than the sum of its proper divisors (4056002265919).

20200221112001 is a wasteful number, since it uses less digits than its factorization.

20200221112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13298368124 (or 13298368117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20200221112001 its reverse (10021112200202), we get a palindrome (30221333312203).

The spelling of 20200221112001 in words is "twenty trillion, two hundred billion, two hundred twenty-one million, one hundred twelve thousand, one".