2021400102040 has 64 divisors (see below), whose sum is σ = 4964460399360. Its totient is φ = 734633550720.

The previous prime is 2021400102037. The next prime is 2021400102091. The reversal of 2021400102040 is 402010041202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546172 + ... + 2083531.

It is an arithmetic number, because the mean of its divisors is an integer number (77569693740).

Almost surely, 2^{2021400102040} is an apocalyptic number.

2021400102040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021400102040 is an abundant number, since it is smaller than the sum of its proper divisors (2943060297320).

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

2021400102040 is a wasteful number, since it uses less digits than its factorization.

2021400102040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631472 (or 2631468 counting only the distinct ones).

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

Adding to 2021400102040 its reverse (402010041202), we get a palindrome (2423410143242).

The spelling of 2021400102040 in words is "two trillion, twenty-one billion, four hundred million, one hundred two thousand, forty".