20010120211004 has 192 divisors, whose sum is σ = 45441131839488. Its totient is φ = 7485114700800.

The previous prime is 20010120210967. The next prime is 20010120211007. The reversal of 20010120211004 is 40011202101002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 20010120211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010120211007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233701169 + ... + 233786775.

It is an arithmetic number, because the mean of its divisors is an integer number (236672561664).

Almost surely, 2^{20010120211004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010120211004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22720565919744).

20010120211004 is an abundant number, since it is smaller than the sum of its proper divisors (25431011628484).

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

20010120211004 is a wasteful number, since it uses less digits than its factorization.

20010120211004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85984 (or 85982 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20010120211004 its reverse (40011202101002), we get a palindrome (60021322312006).

The spelling of 20010120211004 in words is "twenty trillion, ten billion, one hundred twenty million, two hundred eleven thousand, four".