10011021121212 has 12 divisors (see below), whose sum is σ = 23359049282856. Its totient is φ = 3337007040400.

The previous prime is 10011021121159. The next prime is 10011021121223. The reversal of 10011021121212 is 21212112011001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 10011021121191 and 10011021121200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417125880039 + ... + 417125880062.

It is an arithmetic number, because the mean of its divisors is an integer number (1946587440238).

Almost surely, 2^{10011021121212} is an apocalyptic number.

10011021121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10011021121212 is an abundant number, since it is smaller than the sum of its proper divisors (13348028161644).

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

10011021121212 is a wasteful number, since it uses less digits than its factorization.

10011021121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834251760108 (or 834251760106 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10011021121212 its reverse (21212112011001), we get a palindrome (31223133132213).

The spelling of 10011021121212 in words is "ten trillion, eleven billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".