22001022120240 has 160 divisors (see below), whose sum is σ = 76716870609600. Its totient is φ = 5866939185408.

The previous prime is 22001022120199. The next prime is 22001022120241. The reversal of 22001022120240 is 4202122010022.

22001022120240 is a `hidden beast` number, since 2 + 200 + 1 + 0 + 221 + 2 + 0 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22001022120241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62699475 + ... + 63049394.

It is an arithmetic number, because the mean of its divisors is an integer number (479480441310).

Almost surely, 2^{22001022120240} is an apocalyptic number.

22001022120240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001022120240 is an abundant number, since it is smaller than the sum of its proper divisors (54715848489360).

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

22001022120240 is an equidigital number, since it uses as much as digits as its factorization.

22001022120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125748903 (or 125748879 counting only the distinct ones).

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

Adding to 22001022120240 its reverse (4202122010022), we get a palindrome (26203144130262).

The spelling of 22001022120240 in words is "twenty-two trillion, one billion, twenty-two million, one hundred twenty thousand, two hundred forty".