40221400020021 has 32 divisors (see below), whose sum is σ = 65073363315840. Its totient is φ = 24350700902400.

The previous prime is 40221400020019. The next prime is 40221400020041. The reversal of 40221400020021 is 12002000412204.

40221400020021 is a `hidden beast` number, since 4 + 0 + 221 + 400 + 0 + 20 + 0 + 21 = 666.

It is not a de Polignac number, because 40221400020021 - 2¹ = 40221400020019 is a prime.

It is a super-2 number, since 2×40221400020021² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40221400019976 and 40221400020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221400020041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71678860 + ... + 72237813.

It is an arithmetic number, because the mean of its divisors is an integer number (2033542603620).

Almost surely, 2^{40221400020021} is an apocalyptic number.

It is an amenable number.

40221400020021 is a deficient number, since it is larger than the sum of its proper divisors (24851963295819).

40221400020021 is a wasteful number, since it uses less digits than its factorization.

40221400020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143917634 (or 143917628 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 40221400020021 its reverse (12002000412204), we get a palindrome (52223400432225).

The spelling of 40221400020021 in words is "forty trillion, two hundred twenty-one billion, four hundred million, twenty thousand, twenty-one".