10121111101212 has 48 divisors (see below), whose sum is σ = 24254883892512. Its totient is φ = 3282429173760.

The previous prime is 10121111101201. The next prime is 10121111101261. The reversal of 10121111101212 is 21210111112101.

It is a junction number, because it is equal to n+sod(n) for n = 10121111101191 and 10121111101200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16261512 + ... + 16872432.

It is an arithmetic number, because the mean of its divisors is an integer number (505310081094).

Almost surely, 2^{10121111101212} is an apocalyptic number.

10121111101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10121111101212 is an abundant number, since it is smaller than the sum of its proper divisors (14133772791300).

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

10121111101212 is a wasteful number, since it uses less digits than its factorization.

10121111101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648278 (or 648276 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10121111101212 its reverse (21210111112101), we get a palindrome (31331222213313).

The spelling of 10121111101212 in words is "ten trillion, one hundred twenty-one billion, one hundred eleven million, one hundred one thousand, two hundred twelve".