1000212220000 has 480 divisors, whose sum is σ = 2895913810944. Its totient is φ = 332812800000.

The previous prime is 1000212219971. The next prime is 1000212220001. The reversal of 1000212220000 is 222120001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000212220001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1555539679 + ... + 1555540321.

Almost surely, 2^{1000212220000} is an apocalyptic number.

1000212220000 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 1000212220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1447956905472).

1000212220000 is an abundant number, since it is smaller than the sum of its proper divisors (1895701590944).

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

1000212220000 is an equidigital number, since it uses as much as digits as its factorization.

1000212220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1000212220000 its reverse (222120001), we get a palindrome (1000434340001).

Subtracting from 1000212220000 its reverse (222120001), we obtain a palindrome (999990099999).

The spelling of 1000212220000 in words is "one trillion, two hundred twelve million, two hundred twenty thousand".