1121212100012 has 48 divisors (see below), whose sum is σ = 2031495567360. Its totient is φ = 541129185792.

The previous prime is 1121212100011. The next prime is 1121212100023. The reversal of 1121212100012 is 2100012121211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121212100012.

It is not an unprimeable number, because it can be changed into a prime (1121212100011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13429148 + ... + 13512380.

It is an arithmetic number, because the mean of its divisors is an integer number (42322824320).

Almost surely, 2^{1121212100012} is an apocalyptic number.

It is an amenable number.

1121212100012 is a deficient number, since it is larger than the sum of its proper divisors (910283467348).

1121212100012 is a wasteful number, since it uses less digits than its factorization.

1121212100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84270 (or 84268 counting only the distinct ones).

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

Adding to 1121212100012 its reverse (2100012121211), we get a palindrome (3221224221223).

The spelling of 1121212100012 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred thousand, twelve".