242211021231540 has 24 divisors (see below), whose sum is σ = 678190859448480. Its totient is φ = 64589605661728.

The previous prime is 242211021231527. The next prime is 242211021231677. The reversal of 242211021231540 is 45132120112242.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 242211021231498 and 242211021231507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018425176870 + ... + 2018425176989.

It is an arithmetic number, because the mean of its divisors is an integer number (28257952477020).

Almost surely, 2^{242211021231540} is an apocalyptic number.

242211021231540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242211021231540 is an abundant number, since it is smaller than the sum of its proper divisors (435979838216940).

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

242211021231540 is a wasteful number, since it uses less digits than its factorization.

242211021231540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036850353871 (or 4036850353869 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 242211021231540 its reverse (45132120112242), we get a palindrome (287343141343782).

The spelling of 242211021231540 in words is "two hundred forty-two trillion, two hundred eleven billion, twenty-one million, two hundred thirty-one thousand, five hundred forty".