20121200210101 has 8 divisors (see below), whose sum is σ = 20712423340224. Its totient is φ = 19535581091040.

The previous prime is 20121200210081. The next prime is 20121200210113. The reversal of 20121200210101 is 10101200212102.

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 20121200210101 - 2⁹ = 20121200209589 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 (20121200216101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400995480 + ... + 1401009841.

It is an arithmetic number, because the mean of its divisors is an integer number (2589052917528).

Almost surely, 2^{20121200210101} is an apocalyptic number.

It is an amenable number.

20121200210101 is a deficient number, since it is larger than the sum of its proper divisors (591223130123).

20121200210101 is a wasteful number, since it uses less digits than its factorization.

20121200210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802005531.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121200210101 its reverse (10101200212102), we get a palindrome (30222400422203).

The spelling of 20121200210101 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, two hundred ten thousand, one hundred one".