212303121000 has 128 divisors (see below), whose sum is σ = 662623752960. Its totient is φ = 56593824000.

The previous prime is 212303120983. The next prime is 212303121029. The reversal of 212303121000 is 121303212.

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

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, 9531877 + ... + 9554123.

It is an arithmetic number, because the mean of its divisors is an integer number (5176748070).

Almost surely, 2^212303121000 is an apocalyptic number.

212303121000 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 212303121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331311876480).

212303121000 is an abundant number, since it is smaller than the sum of its proper divisors (450320631960).

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

212303121000 is a wasteful number, since it uses less digits than its factorization.

212303121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25452 (or 25438 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 212303121000 its reverse (121303212), we get a palindrome (212424424212).

The spelling of 212303121000 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-one thousand".