210201421340 has 24 divisors (see below), whose sum is σ = 448659429792. Its totient is φ = 82702198080.

The previous prime is 210201421333. The next prime is 210201421399. The reversal of 210201421340 is 43124102012.

210201421340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 86146904 + ... + 86149343.

It is an arithmetic number, because the mean of its divisors is an integer number (18694142908).

Almost surely, 2^210201421340 is an apocalyptic number.

210201421340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210201421340 is an abundant number, since it is smaller than the sum of its proper divisors (238458008452).

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

210201421340 is a wasteful number, since it uses less digits than its factorization.

210201421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172296317 (or 172296315 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 210201421340 its reverse (43124102012), we get a palindrome (253325523352).

The spelling of 210201421340 in words is "two hundred ten billion, two hundred one million, four hundred twenty-one thousand, three hundred forty".