400010021341021 has 8 divisors (see below), whose sum is σ = 492320026265984. Its totient is φ = 316491445456560.

The previous prime is 400010021340977. The next prime is 400010021341057. The reversal of 400010021341021 is 120143120010004.

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 400010021341021 - 2¹³ = 400010021332829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400010021341021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400010021321021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2197857260025 + ... + 2197857260206.

It is an arithmetic number, because the mean of its divisors is an integer number (61540003283248).

Almost surely, 2^{400010021341021} is an apocalyptic number.

It is an amenable number.

400010021341021 is a deficient number, since it is larger than the sum of its proper divisors (92310004924963).

400010021341021 is a wasteful number, since it uses less digits than its factorization.

400010021341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395714520251.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 400010021341021 its reverse (120143120010004), we get a palindrome (520153141351025).

The spelling of 400010021341021 in words is "four hundred trillion, ten billion, twenty-one million, three hundred forty-one thousand, twenty-one".