20012221011004 has 48 divisors (see below), whose sum is σ = 37025687480320. Its totient is φ = 9449482835520.

The previous prime is 20012221011001. The next prime is 20012221011011. The reversal of 20012221011004 is 40011012221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012221011001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4110937 + ... + 7544815.

Almost surely, 2^{20012221011004} is an apocalyptic number.

It is an amenable number.

20012221011004 is a deficient number, since it is larger than the sum of its proper divisors (17013466469316).

20012221011004 is a wasteful number, since it uses less digits than its factorization.

20012221011004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435050 (or 3435048 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012221011004 its reverse (40011012221002), we get a palindrome (60023233232006).

The spelling of 20012221011004 in words is "twenty trillion, twelve billion, two hundred twenty-one million, eleven thousand, four".