122215542420542 has 16 divisors (see below), whose sum is σ = 184272085408320. Its totient is φ = 60792018753312.

The previous prime is 122215542420539. The next prime is 122215542420563. The reversal of 122215542420542 is 245024245512221.

It is a super-2 number, since 2×122215542420542² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122215542420542.

It is a congruent number.

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, 125715713 + ... + 126684140.

It is an arithmetic number, because the mean of its divisors is an integer number (11517005338020).

Almost surely, 2^{122215542420542} is an apocalyptic number.

122215542420542 is a deficient number, since it is larger than the sum of its proper divisors (62056542987778).

122215542420542 is a wasteful number, since it uses less digits than its factorization.

122215542420542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252401107.

The product of its (nonzero) digits is 512000, while the sum is 41.

Adding to 122215542420542 its reverse (245024245512221), we get a palindrome (367239787932763).

The spelling of 122215542420542 in words is "one hundred twenty-two trillion, two hundred fifteen billion, five hundred forty-two million, four hundred twenty thousand, five hundred forty-two".