222154142540 has 24 divisors (see below), whose sum is σ = 508934945232. Its totient is φ = 80783324480.

The previous prime is 222154142533. The next prime is 222154142569. The reversal of 222154142540 is 45241451222.

It is a junction number, because it is equal to n+sod(n) for n = 222154142497 and 222154142506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504895559 + ... + 504895998.

It is an arithmetic number, because the mean of its divisors is an integer number (21205622718).

Almost surely, 2^222154142540 is an apocalyptic number.

222154142540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222154142540 is an abundant number, since it is smaller than the sum of its proper divisors (286780802692).

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

222154142540 is a wasteful number, since it uses less digits than its factorization.

222154142540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009791577 (or 1009791575 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 222154142540 its reverse (45241451222), we get a palindrome (267395593762).

The spelling of 222154142540 in words is "two hundred twenty-two billion, one hundred fifty-four million, one hundred forty-two thousand, five hundred forty".