2121211111012 has 48 divisors (see below), whose sum is σ = 4476615655680. Its totient is φ = 859794388992.

The previous prime is 2121211110971. The next prime is 2121211111013. The reversal of 2121211111012 is 2101111121212.

It is not an unprimeable number, because it can be changed into a prime (2121211111013) 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, 18447213 + ... + 18561844.

It is an arithmetic number, because the mean of its divisors is an integer number (93262826160).

Almost surely, 2^{2121211111012} is an apocalyptic number.

It is an amenable number.

2121211111012 is an abundant number, since it is smaller than the sum of its proper divisors (2355404544668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121211111012 is a wasteful number, since it uses less digits than its factorization.

2121211111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37009180 (or 37009178 counting only the distinct ones).

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

Adding to 2121211111012 its reverse (2101111121212), we get a palindrome (4222322232224).

The spelling of 2121211111012 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, twelve".