1012121010112 has 28 divisors (see below), whose sum is σ = 2114134349320. Its totient is φ = 479425741056.

The previous prime is 1012121010077. The next prime is 1012121010113. The reversal of 1012121010112 is 2110101212101.

It is a happy number.

It is a super-2 number, since 2×1012121010112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1012121010092 and 1012121010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012121010113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416166963 + ... + 416169394.

It is an arithmetic number, because the mean of its divisors is an integer number (75504798190).

Almost surely, 2^{1012121010112} is an apocalyptic number.

It is an amenable number.

1012121010112 is an abundant number, since it is smaller than the sum of its proper divisors (1102013339208).

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

1012121010112 is an equidigital number, since it uses as much as digits as its factorization.

1012121010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832336388 (or 832336378 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012121010112 its reverse (2110101212101), we get a palindrome (3122222222213).

The spelling of 1012121010112 in words is "one trillion, twelve billion, one hundred twenty-one million, ten thousand, one hundred twelve".