1020203103112 has 8 divisors (see below), whose sum is σ = 1912880818350. Its totient is φ = 510101551552.

The previous prime is 1020203103107. The next prime is 1020203103133. The reversal of 1020203103112 is 2113013020201.

It can be written as a sum of positive squares in only one way, i.e., 911860747396 + 108342355716 = 954914^2 + 329154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63762693937 + ... + 63762693952.

Almost surely, 2^{1020203103112} is an apocalyptic number.

It is an amenable number.

1020203103112 is a deficient number, since it is larger than the sum of its proper divisors (892677715238).

1020203103112 is a wasteful number, since it uses less digits than its factorization.

1020203103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127525387895 (or 127525387891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1020203103112 its reverse (2113013020201), we get a palindrome (3133216123313).

The spelling of 1020203103112 in words is "one trillion, twenty billion, two hundred three million, one hundred three thousand, one hundred twelve".