20101212101 has 8 divisors (see below), whose sum is σ = 20156900544. Its totient is φ = 20045590240.

The previous prime is 20101212083. The next prime is 20101212113. The reversal of 20101212101 is 10121210102.

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 20101212101 - 2³⁰ = 19027470277 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 (20101212191) 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, 621410 + ... + 652956.

It is an arithmetic number, because the mean of its divisors is an integer number (2519612568).

Almost surely, 2^20101212101 is an apocalyptic number.

It is an amenable number.

20101212101 is a deficient number, since it is larger than the sum of its proper divisors (55688443).

20101212101 is a wasteful number, since it uses less digits than its factorization.

20101212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33291.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20101212101 its reverse (10121210102), we get a palindrome (30222422203).

The spelling of 20101212101 in words is "twenty billion, one hundred one million, two hundred twelve thousand, one hundred one".