2021420151055 has 8 divisors (see below), whose sum is σ = 2441984076000. Its totient is φ = 1606282857696.

The previous prime is 2021420150993. The next prime is 2021420151067. The reversal of 2021420151055 is 5501510241202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021420151055 - 2¹⁵ = 2021420118287 is a prime.

It is a super-2 number, since 2×2021420151055² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356657075 + ... + 1356658564.

It is an arithmetic number, because the mean of its divisors is an integer number (305248009500).

Almost surely, 2^{2021420151055} is an apocalyptic number.

2021420151055 is a deficient number, since it is larger than the sum of its proper divisors (420563924945).

2021420151055 is a wasteful number, since it uses less digits than its factorization.

2021420151055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713315793.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 2021420151055 its reverse (5501510241202), we get a palindrome (7522930392257).

The spelling of 2021420151055 in words is "two trillion, twenty-one billion, four hundred twenty million, one hundred fifty-one thousand, fifty-five".