2021120200242 has 96 divisors (see below), whose sum is σ = 5145105813120. Its totient is φ = 565300373760.

The previous prime is 2021120200241. The next prime is 2021120200243. The reversal of 2021120200242 is 2420020211202.

2021120200242 is a `hidden beast` number, since 202 + 1 + 1 + 20 + 200 + 242 = 666.

It is an interprime number because it is at equal distance from previous prime (2021120200241) and next prime (2021120200243).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2021120200241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39405478 + ... + 39456734.

It is an arithmetic number, because the mean of its divisors is an integer number (53594852220).

Almost surely, 2^{2021120200242} is an apocalyptic number.

2021120200242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2021120200242 is an abundant number, since it is smaller than the sum of its proper divisors (3123985612878).

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

2021120200242 is a wasteful number, since it uses less digits than its factorization.

2021120200242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66608 (or 66605 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2021120200242 its reverse (2420020211202), we get a palindrome (4441140411444).

The spelling of 2021120200242 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred thousand, two hundred forty-two".