242155222142120 has 32 divisors (see below), whose sum is σ = 622684856937600. Its totient is φ = 83024647591488.

The previous prime is 242155222142089. The next prime is 242155222142173. The reversal of 242155222142120 is 21241222551242.

It is a super-2 number, since 2×242155222142120² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 432420039260 + ... + 432420039819.

It is an arithmetic number, because the mean of its divisors is an integer number (19458901779300).

Almost surely, 2^{242155222142120} is an apocalyptic number.

242155222142120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242155222142120 is an abundant number, since it is smaller than the sum of its proper divisors (380529634795480).

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

242155222142120 is a wasteful number, since it uses less digits than its factorization.

242155222142120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864840079097 (or 864840079093 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 242155222142120 its reverse (21241222551242), we get a palindrome (263396444693362).

The spelling of 242155222142120 in words is "two hundred forty-two trillion, one hundred fifty-five billion, two hundred twenty-two million, one hundred forty-two thousand, one hundred twenty".