1212021110012 has 12 divisors (see below), whose sum is σ = 2123290973496. Its totient is φ = 605366546160.

The previous prime is 1212021109997. The next prime is 1212021110051. The reversal of 1212021110012 is 2100111202121.

It is a super-2 number, since 2×1212021110012² (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 3 ways as a sum of consecutive naturals, for example, 160997978 + ... + 161005505.

It is an arithmetic number, because the mean of its divisors is an integer number (176940914458).

Almost surely, 2^{1212021110012} is an apocalyptic number.

It is an amenable number.

1212021110012 is a deficient number, since it is larger than the sum of its proper divisors (911269863484).

1212021110012 is a wasteful number, since it uses less digits than its factorization.

1212021110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322004428 (or 322004426 counting only the distinct ones).

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

Adding to 1212021110012 its reverse (2100111202121), we get a palindrome (3312132312133).

The spelling of 1212021110012 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred ten thousand, twelve".