2122221222000 has 800 divisors, whose sum is σ = 8427257549568. Its totient is φ = 510494400000.

The previous prime is 2122221221963. The next prime is 2122221222013. The reversal of 2122221222000 is 2221222212.

2122221222000 is a `hidden beast` number, since 212 + 22 + 212 + 220 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 233437455 + ... + 233446545.

Almost surely, 2^{2122221222000} is an apocalyptic number.

2122221222000 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 2122221222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4213628774784).

2122221222000 is an abundant number, since it is smaller than the sum of its proper divisors (6305036327568).

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

2122221222000 is a wasteful number, since it uses less digits than its factorization.

2122221222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268 (or 9243 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2122221222000 its reverse (2221222212), we get a palindrome (2124442444212).

It can be divided in two parts, 21222212 and 22000, that added together give a palindrome (21244212).

The spelling of 2122221222000 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand".