10121212121112 has 48 divisors (see below), whose sum is σ = 27758598660000. Its totient is φ = 3331031835456.

The previous prime is 10121212121099. The next prime is 10121212121129. The reversal of 10121212121112 is 21112121212101.

It is a happy number.

It is a super-2 number, since 2×10121212121112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889692987 + ... + 889704362.

It is an arithmetic number, because the mean of its divisors is an integer number (578304138750).

Almost surely, 2^{10121212121112} is an apocalyptic number.

10121212121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10121212121112 is an abundant number, since it is smaller than the sum of its proper divisors (17637386538888).

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

10121212121112 is a wasteful number, since it uses less digits than its factorization.

10121212121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779397440 (or 1779397433 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 10121212121112 its reverse (21112121212101), we get a palindrome (31233333333213).

The spelling of 10121212121112 in words is "ten trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".