2211122100012 has 48 divisors (see below), whose sum is σ = 5957112483840. Its totient is φ = 625236291072.

The previous prime is 2211122100007. The next prime is 2211122100013. The reversal of 2211122100012 is 2100012211122.

It is a super-2 number, since 2×2211122100012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211122099964 and 2211122100000.

It is not an unprimeable number, because it can be changed into a prime (2211122100013) 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, 135676812 + ... + 135693107.

It is an arithmetic number, because the mean of its divisors is an integer number (124106510080).

Almost surely, 2^{2211122100012} is an apocalyptic number.

It is an amenable number.

2211122100012 is an abundant number, since it is smaller than the sum of its proper divisors (3745990383828).

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

2211122100012 is a wasteful number, since it uses less digits than its factorization.

2211122100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271370030 (or 271370028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2211122100012 its reverse (2100012211122), we get a palindrome (4311134311134).

The spelling of 2211122100012 in words is "two trillion, two hundred eleven billion, one hundred twenty-two million, one hundred thousand, twelve".