2021405001002 has 4 divisors (see below), whose sum is σ = 3032107501506. Its totient is φ = 1010702500500.

The previous prime is 2021405000999. The next prime is 2021405001019. The reversal of 2021405001002 is 2001005041202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1986439366921 + 34965634081 = 1409411^2 + 186991^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505351250249 + ... + 505351250252.

Almost surely, 2^{2021405001002} is an apocalyptic number.

2021405001002 is a deficient number, since it is larger than the sum of its proper divisors (1010702500504).

2021405001002 is a wasteful number, since it uses less digits than its factorization.

2021405001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010702500503.

The product of its (nonzero) digits is 160, while the sum is 17.

The spelling of 2021405001002 in words is "two trillion, twenty-one billion, four hundred five million, one thousand, two".