22021606216240 has 40 divisors (see below), whose sum is σ = 52166276622288. Its totient is φ = 8642441683200.

The previous prime is 22021606216219. The next prime is 22021606216241. The reversal of 22021606216240 is 4261260612022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×22021606216240² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22021606216196 and 22021606216205.

It is not an unprimeable number, because it can be changed into a prime (22021606216241) 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, 2596883286 + ... + 2596891765.

Almost surely, 2^{22021606216240} is an apocalyptic number.

22021606216240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021606216240 is an abundant number, since it is smaller than the sum of its proper divisors (30144670406048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021606216240 is a wasteful number, since it uses less digits than its factorization.

22021606216240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193775117 (or 5193775111 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 22021606216240 its reverse (4261260612022), we get a palindrome (26282866828262).

The spelling of 22021606216240 in words is "twenty-two trillion, twenty-one billion, six hundred six million, two hundred sixteen thousand, two hundred forty".