20011210113204 has 72 divisors (see below), whose sum is σ = 51818673783240. Its totient is φ = 6507581491200.

The previous prime is 20011210113199. The next prime is 20011210113217. The reversal of 20011210113204 is 40231101211002.

It can be written as a sum of positive squares in 4 ways, for example, as 4016809623204 + 15994400490000 = 2004198^2 + 3999300^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99058252 + ... + 99260060.

It is an arithmetic number, because the mean of its divisors is an integer number (719703802545).

Almost surely, 2^{20011210113204} is an apocalyptic number.

It is an amenable number.

20011210113204 is an abundant number, since it is smaller than the sum of its proper divisors (31807463670036).

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

20011210113204 is a wasteful number, since it uses less digits than its factorization.

20011210113204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269041 (or 269036 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20011210113204 its reverse (40231101211002), we get a palindrome (60242311324206).

The spelling of 20011210113204 in words is "twenty trillion, eleven billion, two hundred ten million, one hundred thirteen thousand, two hundred four".