1020212210000 has 100 divisors (see below), whose sum is σ = 2470684418532. Its totient is φ = 407977728000.

The previous prime is 1020212209999. The next prime is 1020212210023. The reversal of 1020212210000 is 122120201.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 765478007056 + 254734202944 = 874916^2 + 504712^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45958904 + ... + 45981096.

Almost surely, 2^{1020212210000} is an apocalyptic number.

1020212210000 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 1020212210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235342209266).

1020212210000 is an abundant number, since it is smaller than the sum of its proper divisors (1450472208532).

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

1020212210000 is an equidigital number, since it uses as much as digits as its factorization.

1020212210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26818 (or 26797 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1020212210000 its reverse (122120201), we get a palindrome (1020334330201).

The spelling of 1020212210000 in words is "one trillion, twenty billion, two hundred twelve million, two hundred ten thousand".