22121243111040 has 128 divisors (see below), whose sum is σ = 70513213158720. Its totient is φ = 5898851696640.

The previous prime is 22121243111017. The next prime is 22121243111059. The reversal of 22121243111040 is 4011134212122.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22121243111040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92995455 + ... + 93233025.

Almost surely, 2^{22121243111040} is an apocalyptic number.

22121243111040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121243111040 is an abundant number, since it is smaller than the sum of its proper divisors (48391970047680).

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

22121243111040 is a wasteful number, since it uses less digits than its factorization.

22121243111040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286090 (or 286078 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 22121243111040 its reverse (4011134212122), we get a palindrome (26132377323162).

The spelling of 22121243111040 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred forty-three million, one hundred eleven thousand, forty".