20010211120120 has 256 divisors, whose sum is σ = 53619651388800. Its totient is φ = 6651153285120.

The previous prime is 20010211120111. The next prime is 20010211120127. The reversal of 20010211120120 is 2102111201002.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 20010211120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010211120127) 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, 18779260 + ... + 19816180.

Almost surely, 2^{20010211120120} is an apocalyptic number.

20010211120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010211120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26809825694400).

20010211120120 is an abundant number, since it is smaller than the sum of its proper divisors (33609440268680).

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

20010211120120 is a wasteful number, since it uses less digits than its factorization.

20010211120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037058 (or 1037054 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20010211120120 its reverse (2102111201002), we get a palindrome (22112322321122).

The spelling of 20010211120120 in words is "twenty trillion, ten billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty".