20012202220120 has 128 divisors (see below), whose sum is σ = 50157217535040. Its totient is φ = 7125085347840.

The previous prime is 20012202220117. The next prime is 20012202220187. The reversal of 20012202220120 is 2102220221002.

It is a junction number, because it is equal to n+sod(n) for n = 20012202220094 and 20012202220103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2126554 + ... + 6674326.

Almost surely, 2^{20012202220120} is an apocalyptic number.

20012202220120 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 20012202220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25078608767520).

20012202220120 is an abundant number, since it is smaller than the sum of its proper divisors (30145015314920).

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

20012202220120 is a wasteful number, since it uses less digits than its factorization.

20012202220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548005 (or 4548001 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20012202220120 its reverse (2102220221002), we get a palindrome (22114422441122).

The spelling of 20012202220120 in words is "twenty trillion, twelve billion, two hundred two million, two hundred twenty thousand, one hundred twenty".