1021201001012 has 6 divisors (see below), whose sum is σ = 1787101751778. Its totient is φ = 510600500504.

The previous prime is 1021201001011. The next prime is 1021201001017. The reversal of 1021201001012 is 2101001021201.

It can be written as a sum of positive squares in only one way, i.e., 1019021605156 + 2179395856 = 1009466^2 + 46684^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021201000984 and 1021201001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201001011) by changing a digit.

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 as a sum of consecutive naturals, namely, 127650125123 + ... + 127650125130.

It is an arithmetic number, because the mean of its divisors is an integer number (297850291963).

Almost surely, 2^{1021201001012} is an apocalyptic number.

It is an amenable number.

1021201001012 is a deficient number, since it is larger than the sum of its proper divisors (765900750766).

1021201001012 is a wasteful number, since it uses less digits than its factorization.

1021201001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255300250257 (or 255300250255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021201001012 its reverse (2101001021201), we get a palindrome (3122202022213).

The spelling of 1021201001012 in words is "one trillion, twenty-one billion, two hundred one million, one thousand, twelve".