55611242121242 has 16 divisors (see below), whose sum is σ = 85375788553440. Its totient is φ = 27152933790192.

The previous prime is 55611242121217. The next prime is 55611242121251. The reversal of 55611242121242 is 24212124211655.

It is a super-2 number, since 2×55611242121242² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55611242121196 and 55611242121205.

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, 71574692 + ... + 72347487.

It is an arithmetic number, because the mean of its divisors is an integer number (5335986784590).

Almost surely, 2^{55611242121242} is an apocalyptic number.

55611242121242 is a deficient number, since it is larger than the sum of its proper divisors (29764546432198).

55611242121242 is a wasteful number, since it uses less digits than its factorization.

55611242121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143926717.

The product of its digits is 76800, while the sum is 38.

Adding to 55611242121242 its reverse (24212124211655), we get a palindrome (79823366332897).

The spelling of 55611242121242 in words is "fifty-five trillion, six hundred eleven billion, two hundred forty-two million, one hundred twenty-one thousand, two hundred forty-two".