1211011012012 has 6 divisors (see below), whose sum is σ = 2119269271028. Its totient is φ = 605505506004.

The previous prime is 1211011011983. The next prime is 1211011012019. The reversal of 1211011012012 is 2102101101121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211011011983 and 1211011012001.

It is not an unprimeable number, because it can be changed into a prime (1211011012019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151376376498 + ... + 151376376505.

Almost surely, 2^{1211011012012} is an apocalyptic number.

It is an amenable number.

1211011012012 is a deficient number, since it is larger than the sum of its proper divisors (908258259016).

1211011012012 is a wasteful number, since it uses less digits than its factorization.

1211011012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302752753007 (or 302752753005 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211011012012 its reverse (2102101101121), we get a palindrome (3313112113133).

The spelling of 1211011012012 in words is "one trillion, two hundred eleven billion, eleven million, twelve thousand, twelve".