20012211020120 has 192 divisors, whose sum is σ = 49664176380000. Its totient is φ = 7252041646080.

The previous prime is 20012211020119. The next prime is 20012211020143. The reversal of 20012211020120 is 2102011221002.

It is a junction number, because it is equal to n+sod(n) for n = 20012211020095 and 20012211020104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1918895066 + ... + 1918905494.

Almost surely, 2^{20012211020120} is an apocalyptic number.

20012211020120 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 20012211020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24832088190000).

20012211020120 is an abundant number, since it is smaller than the sum of its proper divisors (29651965359880).

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

20012211020120 is a wasteful number, since it uses less digits than its factorization.

20012211020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11794 (or 11779 counting only the distinct ones).

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

Adding to 20012211020120 its reverse (2102011221002), we get a palindrome (22114222241122).

The spelling of 20012211020120 in words is "twenty trillion, twelve billion, two hundred eleven million, twenty thousand, one hundred twenty".