10101212112 has 40 divisors (see below), whose sum is σ = 26936569600. Its totient is φ = 3258455040.

The previous prime is 10101212029. The next prime is 10101212131. The reversal of 10101212112 is 21121210101.

It is a super-2 number, since 2×10101212112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3392737 + ... + 3395712.

It is an arithmetic number, because the mean of its divisors is an integer number (673414240).

Almost surely, 2^10101212112 is an apocalyptic number.

10101212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10101212112 is an abundant number, since it is smaller than the sum of its proper divisors (16835357488).

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

10101212112 is a wasteful number, since it uses less digits than its factorization.

10101212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788491 (or 6788485 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10101212112 its reverse (21121210101), we get a palindrome (31222422213).

The spelling of 10101212112 in words is "ten billion, one hundred one million, two hundred twelve thousand, one hundred twelve".