1200211021012 has 6 divisors (see below), whose sum is σ = 2100369286778. Its totient is φ = 600105510504.

The previous prime is 1200211020949. The next prime is 1200211021067. The reversal of 1200211021012 is 2101201120021.

It can be written as a sum of positive squares in only one way, i.e., 1039188592836 + 161022428176 = 1019406^2 + 401276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200211020983 and 1200211021001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150026377623 + ... + 150026377630.

Almost surely, 2^{1200211021012} is an apocalyptic number.

It is an amenable number.

1200211021012 is a deficient number, since it is larger than the sum of its proper divisors (900158265766).

1200211021012 is a wasteful number, since it uses less digits than its factorization.

1200211021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300052755257 (or 300052755255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200211021012 its reverse (2101201120021), we get a palindrome (3301412141033).

Subtracting 1200211021012 from its reverse (2101201120021), we obtain a palindrome (900990099009).

The spelling of 1200211021012 in words is "one trillion, two hundred billion, two hundred eleven million, twenty-one thousand, twelve".