20203121030 has 16 divisors (see below), whose sum is σ = 36376074000. Its totient is φ = 8078924832.

The previous prime is 20203120999. The next prime is 20203121047. The reversal of 20203121030 is 3012130202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20203120996 and 20203121014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253709 + ... + 323688.

It is an arithmetic number, because the mean of its divisors is an integer number (2273504625).

Almost surely, 2^20203121030 is an apocalyptic number.

20203121030 is a deficient number, since it is larger than the sum of its proper divisors (16172952970).

20203121030 is a wasteful number, since it uses less digits than its factorization.

20203121030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580903.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20203121030 its reverse (3012130202), we get a palindrome (23215251232).

The spelling of 20203121030 in words is "twenty billion, two hundred three million, one hundred twenty-one thousand, thirty".