2123220223212 has 144 divisors (see below), whose sum is σ = 5461482697440. Its totient is φ = 641515438080.

The previous prime is 2123220223193. The next prime is 2123220223259.

2123220223212 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1254116238 + ... + 1254117930.

Almost surely, 2^{2123220223212} is an apocalyptic number.

2123220223212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123220223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2730741348720).

2123220223212 is an abundant number, since it is smaller than the sum of its proper divisors (3338262474228).

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

2123220223212 is a wasteful number, since it uses less digits than its factorization.

2123220223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3731 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 2123220 and 223212, that added together give a palindrome (2346432).

The spelling of 2123220223212 in words is "two trillion, one hundred twenty-three billion, two hundred twenty million, two hundred twenty-three thousand, two hundred twelve".