402011000020021 has 8 divisors (see below), whose sum is σ = 459441449127360. Its totient is φ = 344580627474528.

The previous prime is 402011000019983. The next prime is 402011000020033. The reversal of 402011000020021 is 120020000110204.

It is a happy number.

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 402011000020021 - 2¹¹ = 402011000017973 is a prime.

It is a super-2 number, since 2×402011000020021² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402011000019983 and 402011000020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402011000020051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7409416 + ... + 29307361.

It is an arithmetic number, because the mean of its divisors is an integer number (57430181140920).

Almost surely, 2^{402011000020021} is an apocalyptic number.

It is an amenable number.

402011000020021 is a deficient number, since it is larger than the sum of its proper divisors (57430449107339).

402011000020021 is a wasteful number, since it uses less digits than its factorization.

402011000020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38280923.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 402011000020021 its reverse (120020000110204), we get a palindrome (522031000130225).

The spelling of 402011000020021 in words is "four hundred two trillion, eleven billion, twenty thousand, twenty-one".