20101212110 has 128 divisors (see below), whose sum is σ = 42760396800. Its totient is φ = 6662476800.

The previous prime is 20101212083. The next prime is 20101212113. The reversal of 20101212110 is 1121210102.

It is a junction number, because it is equal to n+sod(n) for n = 20101212091 and 20101212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101212113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84105371 + ... + 84105609.

It is an arithmetic number, because the mean of its divisors is an integer number (334065600).

Almost surely, 2^20101212110 is an apocalyptic number.

20101212110 is an abundant number, since it is smaller than the sum of its proper divisors (22659184690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101212110 is a wasteful number, since it uses less digits than its factorization.

20101212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

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

Adding to 20101212110 its reverse (1121210102), we get a palindrome (21222422212).

The spelling of 20101212110 in words is "twenty billion, one hundred one million, two hundred twelve thousand, one hundred ten".