20101212106 has 16 divisors (see below), whose sum is σ = 30918521088. Its totient is φ = 9795535200.

The previous prime is 20101212083. The next prime is 20101212113. The reversal of 20101212106 is 60121210102.

It is a self number, because there is not a number n which added to its sum of digits gives 20101212106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42420 + ... + 204943.

It is an arithmetic number, because the mean of its divisors is an integer number (1932407568).

Almost surely, 2^20101212106 is an apocalyptic number.

20101212106 is a deficient number, since it is larger than the sum of its proper divisors (10817308982).

20101212106 is a wasteful number, since it uses less digits than its factorization.

20101212106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248397.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20101212106 its reverse (60121210102), we get a palindrome (80222422208).

The spelling of 20101212106 in words is "twenty billion, one hundred one million, two hundred twelve thousand, one hundred six".