20100212221201 has 16 divisors (see below), whose sum is σ = 25232041497600. Its totient is φ = 15612325671888.

The previous prime is 20100212221183. The next prime is 20100212221289. The reversal of 20100212221201 is 10212221200102.

It is a happy number.

It is not a de Polignac number, because 20100212221201 - 2⁵ = 20100212221169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20100212221301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3285419011 + ... + 3285425128.

It is an arithmetic number, because the mean of its divisors is an integer number (1577002593600).

Almost surely, 2^{20100212221201} is an apocalyptic number.

It is an amenable number.

20100212221201 is a deficient number, since it is larger than the sum of its proper divisors (5131829276399).

20100212221201 is a wasteful number, since it uses less digits than its factorization.

20100212221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570844188.

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

Adding to 20100212221201 its reverse (10212221200102), we get a palindrome (30312433421303).

The spelling of 20100212221201 in words is "twenty trillion, one hundred billion, two hundred twelve million, two hundred twenty-one thousand, two hundred one".