240021200011 has 16 divisors (see below), whose sum is σ = 246440607840. Its totient is φ = 233678848000.

The previous prime is 240021200009. The next prime is 240021200077. The reversal of 240021200011 is 110002120042.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 240021200011 - 2¹ = 240021200009 is a prime.

It is a super-2 number, since 2×240021200011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240021199964 and 240021200000.

It is not an unprimeable number, because it can be changed into a prime (240021200411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3544971 + ... + 3612043.

It is an arithmetic number, because the mean of its divisors is an integer number (15402537990).

Almost surely, 2^240021200011 is an apocalyptic number.

240021200011 is a deficient number, since it is larger than the sum of its proper divisors (6419407829).

240021200011 is a wasteful number, since it uses less digits than its factorization.

240021200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67646.

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

Adding to 240021200011 its reverse (110002120042), we get a palindrome (350023320053).

The spelling of 240021200011 in words is "two hundred forty billion, twenty-one million, two hundred thousand, eleven".