1021220020012 has 12 divisors (see below), whose sum is σ = 1789158976696. Its totient is φ = 510031740960.

The previous prime is 1021220020003. The next prime is 1021220020031. The reversal of 1021220020012 is 2100200221201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021220019974 and 1021220020001.

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, 144563289 + ... + 144570352.

Almost surely, 2^{1021220020012} is an apocalyptic number.

It is an amenable number.

1021220020012 is a deficient number, since it is larger than the sum of its proper divisors (767938956684).

1021220020012 is a wasteful number, since it uses less digits than its factorization.

1021220020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289134528 (or 289134526 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1021220020012 its reverse (2100200221201), we get a palindrome (3121420241213).

The spelling of 1021220020012 in words is "one trillion, twenty-one billion, two hundred twenty million, twenty thousand, twelve".