21203000140 has 24 divisors (see below), whose sum is σ = 50887200672. Its totient is φ = 7269600000.

The previous prime is 21203000123. The next prime is 21203000197. The reversal of 21203000140 is 4100030212.

It is a self number, because there is not a number n which added to its sum of digits gives 21203000140.

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, 75724861 + ... + 75725140.

It is an arithmetic number, because the mean of its divisors is an integer number (2120300028).

Almost surely, 2^21203000140 is an apocalyptic number.

21203000140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21203000140 is an abundant number, since it is smaller than the sum of its proper divisors (29684200532).

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

21203000140 is a wasteful number, since it uses less digits than its factorization.

21203000140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151450017 (or 151450015 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21203000140 its reverse (4100030212), we get a palindrome (25303030352).

The spelling of 21203000140 in words is "twenty-one billion, two hundred three million, one hundred forty", and thus it is an aban number.