1201211021012 has 12 divisors (see below), whose sum is σ = 2104362750420. Its totient is φ = 599964520896.

The previous prime is 1201211020913. The next prime is 1201211021041. The reversal of 1201211021012 is 2101201121021.

It can be written as a sum of positive squares in 2 ways, for example, as 18193693456 + 1183017327556 = 134884^2 + 1087666^2 .

It is a congruent number.

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, 160243187 + ... + 160250682.

It is an arithmetic number, because the mean of its divisors is an integer number (175363562535).

Almost surely, 2^{1201211021012} is an apocalyptic number.

It is an amenable number.

1201211021012 is a deficient number, since it is larger than the sum of its proper divisors (903151729408).

1201211021012 is a wasteful number, since it uses less digits than its factorization.

1201211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320494810 (or 320494808 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201211021012 its reverse (2101201121021), we get a palindrome (3302412142033).

The spelling of 1201211021012 in words is "one trillion, two hundred one billion, two hundred eleven million, twenty-one thousand, twelve".