20012221012201 has 32 divisors (see below), whose sum is σ = 22329976435200. Its totient is φ = 17782221600000.

The previous prime is 20012221012177. The next prime is 20012221012211. The reversal of 20012221012201 is 10221012221002.

It is a happy number.

It is not a de Polignac number, because 20012221012201 - 2⁵ = 20012221012169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012221012211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 868989355 + ... + 869012383.

It is an arithmetic number, because the mean of its divisors is an integer number (697811763600).

Almost surely, 2^{20012221012201} is an apocalyptic number.

It is an amenable number.

20012221012201 is a deficient number, since it is larger than the sum of its proper divisors (2317755422999).

20012221012201 is a wasteful number, since it uses less digits than its factorization.

20012221012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33121.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012221012201 its reverse (10221012221002), we get a palindrome (30233233233203).

The spelling of 20012221012201 in words is "twenty trillion, twelve billion, two hundred twenty-one million, twelve thousand, two hundred one".