1201221202012 has 24 divisors (see below), whose sum is σ = 2283873950736. Its totient is φ = 549503501568.

The previous prime is 1201221202003. The next prime is 1201221202057. The reversal of 1201221202012 is 2102021221021.

It is a happy number.

It is a super-2 number, since 2×1201221202012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102208318 + ... + 102220069.

It is an arithmetic number, because the mean of its divisors is an integer number (95161414614).

Almost surely, 2^{1201221202012} is an apocalyptic number.

It is an amenable number.

1201221202012 is a deficient number, since it is larger than the sum of its proper divisors (1082652748724).

1201221202012 is a wasteful number, since it uses less digits than its factorization.

1201221202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204428517 (or 204428515 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1201221202012 its reverse (2102021221021), we get a palindrome (3303242423033).

The spelling of 1201221202012 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred two thousand, twelve".