1211202100012 has 24 divisors (see below), whose sum is σ = 2231731051200. Its totient is φ = 573580922256.

The previous prime is 1211202099979. The next prime is 1211202100013. The reversal of 1211202100012 is 2100012021121.

It is a junction number, because it is equal to n+sod(n) for n = 1211202099965 and 1211202100001.

It is not an unprimeable number, because it can be changed into a prime (1211202100013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733062 + ... + 2329357.

It is an arithmetic number, because the mean of its divisors is an integer number (92988793800).

Almost surely, 2^{1211202100012} is an apocalyptic number.

It is an amenable number.

1211202100012 is a deficient number, since it is larger than the sum of its proper divisors (1020528951188).

1211202100012 is a wasteful number, since it uses less digits than its factorization.

1211202100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066365 (or 4066363 counting only the distinct ones).

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

Adding to 1211202100012 its reverse (2100012021121), we get a palindrome (3311214121133).

The spelling of 1211202100012 in words is "one trillion, two hundred eleven billion, two hundred two million, one hundred thousand, twelve".