1020021112212 has 12 divisors (see below), whose sum is σ = 2380049261856. Its totient is φ = 340007037400.

The previous prime is 1020021112183. The next prime is 1020021112261. The reversal of 1020021112212 is 2122111200201.

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 = 1020021112191 and 1020021112200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42500879664 + ... + 42500879687.

It is an arithmetic number, because the mean of its divisors is an integer number (198337438488).

Almost surely, 2^{1020021112212} is an apocalyptic number.

1020021112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020021112212 is an abundant number, since it is smaller than the sum of its proper divisors (1360028149644).

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

1020021112212 is a wasteful number, since it uses less digits than its factorization.

1020021112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85001759358 (or 85001759356 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1020021112212 its reverse (2122111200201), we get a palindrome (3142132312413).

The spelling of 1020021112212 in words is "one trillion, twenty billion, twenty-one million, one hundred twelve thousand, two hundred twelve".