20000120101 has 16 divisors (see below), whose sum is σ = 22905212400. Its totient is φ = 17299749888.

The previous prime is 20000120093. The next prime is 20000120113. The reversal of 20000120101 is 10102100002.

It can be written as a sum of positive squares in 8 ways, for example, as 1251390625 + 18748729476 = 35375^2 + 136926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000120101 - 2³ = 20000120093 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 (20000120131) 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, 146986 + ... + 248203.

It is an arithmetic number, because the mean of its divisors is an integer number (1431575775).

Almost surely, 2^20000120101 is an apocalyptic number.

It is an amenable number.

20000120101 is a deficient number, since it is larger than the sum of its proper divisors (2905092299).

20000120101 is a wasteful number, since it uses less digits than its factorization.

20000120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395448.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20000120101 its reverse (10102100002), we get a palindrome (30102220103).

The spelling of 20000120101 in words is "twenty billion, one hundred twenty thousand, one hundred one".