1020120020012 has 12 divisors (see below), whose sum is σ = 1789082511216. Its totient is φ = 508953588240.

The previous prime is 1020120019999. The next prime is 1020120020077. The reversal of 1020120020012 is 2100200210201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020120019975 and 1020120020002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276603368 + ... + 276607055.

It is an arithmetic number, because the mean of its divisors is an integer number (149090209268).

Almost surely, 2^{1020120020012} is an apocalyptic number.

It is an amenable number.

1020120020012 is a deficient number, since it is larger than the sum of its proper divisors (768962491204).

1020120020012 is a wasteful number, since it uses less digits than its factorization.

1020120020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553210888 (or 553210886 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1020120020012 its reverse (2100200210201), we get a palindrome (3120320230213).

The spelling of 1020120020012 in words is "one trillion, twenty billion, one hundred twenty million, twenty thousand, twelve".