20203121000 has 64 divisors (see below), whose sum is σ = 47941320960. Its totient is φ = 7967400000.

The previous prime is 20203120999. The next prime is 20203121047. The reversal of 20203121000 is 12130202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71276 + ... + 213275.

It is an arithmetic number, because the mean of its divisors is an integer number (749083140).

Almost surely, 2^20203121000 is an apocalyptic number.

20203121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20203121000 is an abundant number, since it is smaller than the sum of its proper divisors (27738199960).

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

20203121000 is a wasteful number, since it uses less digits than its factorization.

20203121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284643 (or 284629 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20203121000 its reverse (12130202), we get a palindrome (20215251202).

The spelling of 20203121000 in words is "twenty billion, two hundred three million, one hundred twenty-one thousand".