20010120002220 has 48 divisors (see below), whose sum is σ = 56096085040128. Its totient is φ = 5329579711680.

The previous prime is 20010120002207. The next prime is 20010120002221. The reversal of 20010120002220 is 2220002101002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20010120002196 and 20010120002205.

It is not an unprimeable number, because it can be changed into a prime (20010120002221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201583996 + ... + 201683235.

It is an arithmetic number, because the mean of its divisors is an integer number (1168668438336).

Almost surely, 2^{20010120002220} is an apocalyptic number.

20010120002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010120002220 is an abundant number, since it is smaller than the sum of its proper divisors (36085965037908).

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

20010120002220 is a wasteful number, since it uses less digits than its factorization.

20010120002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403268070 (or 403268068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20010120002220 its reverse (2220002101002), we get a palindrome (22230122103222).

The spelling of 20010120002220 in words is "twenty trillion, ten billion, one hundred twenty million, two thousand, two hundred twenty".