2021101042140 has 144 divisors (see below), whose sum is σ = 6481771470720. Its totient is φ = 508344439680.

The previous prime is 2021101042127. The next prime is 2021101042157. The reversal of 2021101042140 is 412401011202.

2021101042140 is a `hidden beast` number, since 20 + 211 + 0 + 10 + 421 + 4 + 0 = 666.

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

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, 525346 + ... + 2078025.

It is an arithmetic number, because the mean of its divisors is an integer number (45012301880).

Almost surely, 2^{2021101042140} is an apocalyptic number.

2021101042140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021101042140 is an abundant number, since it is smaller than the sum of its proper divisors (4460670428580).

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

2021101042140 is a wasteful number, since it uses less digits than its factorization.

2021101042140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603632 (or 2603627 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021101042140 its reverse (412401011202), we get a palindrome (2433502053342).

The spelling of 2021101042140 in words is "two trillion, twenty-one billion, one hundred one million, forty-two thousand, one hundred forty".