20331121012 has 12 divisors (see below), whose sum is σ = 35592721920. Its totient is φ = 10161771896.

The previous prime is 20331121001. The next prime is 20331121043. The reversal of 20331121012 is 21012113302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935062 + ... + 956557.

It is an arithmetic number, because the mean of its divisors is an integer number (2966060160).

Almost surely, 2^20331121012 is an apocalyptic number.

It is an amenable number.

20331121012 is a deficient number, since it is larger than the sum of its proper divisors (15261600908).

20331121012 is a wasteful number, since it uses less digits than its factorization.

20331121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894310 (or 1894308 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20331121012 its reverse (21012113302), we get a palindrome (41343234314).

The spelling of 20331121012 in words is "twenty billion, three hundred thirty-one million, one hundred twenty-one thousand, twelve".