210121002300 has 144 divisors (see below), whose sum is σ = 670056613632. Its totient is φ = 50413209600.

The previous prime is 210121002277. The next prime is 210121002313. The reversal of 210121002300 is 3200121012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8112 + ... + 648311.

It is an arithmetic number, because the mean of its divisors is an integer number (4653170928).

Almost surely, 2^210121002300 is an apocalyptic number.

210121002300 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 210121002300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335028306816).

210121002300 is an abundant number, since it is smaller than the sum of its proper divisors (459935611332).

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

210121002300 is a wasteful number, since it uses less digits than its factorization.

210121002300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656548 (or 656541 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 210121002300 its reverse (3200121012), we get a palindrome (213321123312).

The spelling of 210121002300 in words is "two hundred ten billion, one hundred twenty-one million, two thousand, three hundred".