1021112211012 has 24 divisors (see below), whose sum is σ = 2507994904800. Its totient is φ = 322456487616.

The previous prime is 1021112210983. The next prime is 1021112211029. The reversal of 1021112211012 is 2101122111201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021112210982 and 1021112211000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239280937 + ... + 2239281392.

It is an arithmetic number, because the mean of its divisors is an integer number (104499787700).

Almost surely, 2^{1021112211012} is an apocalyptic number.

1021112211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021112211012 is an abundant number, since it is smaller than the sum of its proper divisors (1486882693788).

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

1021112211012 is a wasteful number, since it uses less digits than its factorization.

1021112211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478562355 (or 4478562353 counting only the distinct ones).

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

Adding to 1021112211012 its reverse (2101122111201), we get a palindrome (3122234322213).

The spelling of 1021112211012 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, twelve".