1222212002000 has 160 divisors (see below), whose sum is σ = 3264787468800. Its totient is φ = 438814272000.

The previous prime is 1222212001991. The next prime is 1222212002017. The reversal of 1222212002000 is 2002122221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1386386 + ... + 2089614.

It is an arithmetic number, because the mean of its divisors is an integer number (20404921680).

Almost surely, 2^{1222212002000} is an apocalyptic number.

1222212002000 is a gapful number since it is divisible by the number (10) 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 1222212002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632393734400).

1222212002000 is an abundant number, since it is smaller than the sum of its proper divisors (2042575466800).

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

1222212002000 is a wasteful number, since it uses less digits than its factorization.

1222212002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703342 (or 703326 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1222212002000 its reverse (2002122221), we get a palindrome (1224214124221).

It can be divided in two parts, 122 and 2212002000, that added together give a palindrome (2212002122).

The spelling of 1222212002000 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two thousand".