2112122220000 has 480 divisors, whose sum is σ = 7531148161152. Its totient is φ = 515027712000.

The previous prime is 2112122219873. The next prime is 2112122220031. The reversal of 2112122220000 is 222212112.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×2112122220000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 83447347 + ... + 83472653.

Almost surely, 2^{2112122220000} is an apocalyptic number.

2112122220000 is a gapful number since it is divisible by the number (20) 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 2112122220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3765574080576).

2112122220000 is an abundant number, since it is smaller than the sum of its proper divisors (5419025941152).

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

2112122220000 is a wasteful number, since it uses less digits than its factorization.

2112122220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25460 (or 25437 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2112122220000 its reverse (222212112), we get a palindrome (2112344432112).

The spelling of 2112122220000 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand".