2211121110012 has 24 divisors (see below), whose sum is σ = 5159557590096. Its totient is φ = 737001084288.

The previous prime is 2211121110001. The next prime is 2211121110017. The reversal of 2211121110012 is 2100111211122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2211121109973 and 2211121110000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211121110017) 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, 4675753 + ... + 5126880.

It is an arithmetic number, because the mean of its divisors is an integer number (214981566254).

Almost surely, 2^{2211121110012} is an apocalyptic number.

It is an amenable number.

2211121110012 is an abundant number, since it is smaller than the sum of its proper divisors (2948436480084).

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

2211121110012 is a wasteful number, since it uses less digits than its factorization.

2211121110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9821437 (or 9821435 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2211121110012 its reverse (2100111211122), we get a palindrome (4311232321134).

The spelling of 2211121110012 in words is "two trillion, two hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, twelve".