1021201111012 has 12 divisors (see below), whose sum is σ = 1795571623216. Its totient is φ = 508180647240.

The previous prime is 1021201110971. The next prime is 1021201111027. The reversal of 1021201111012 is 2101111021201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021201110983 and 1021201111001.

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, 604976118 + ... + 604977805.

Almost surely, 2^{1021201111012} is an apocalyptic number.

It is an amenable number.

1021201111012 is a deficient number, since it is larger than the sum of its proper divisors (774370512204).

1021201111012 is a wasteful number, since it uses less digits than its factorization.

1021201111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209954138 (or 1209954136 counting only the distinct ones).

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

Adding to 1021201111012 its reverse (2101111021201), we get a palindrome (3122312132213).

The spelling of 1021201111012 in words is "one trillion, twenty-one billion, two hundred one million, one hundred eleven thousand, twelve".