221240115342 has 32 divisors (see below), whose sum is σ = 494391340800. Its totient is φ = 73334709144.

The previous prime is 221240115311. The next prime is 221240115353. The reversal of 221240115342 is 243511042122.

221240115342 is a `hidden beast` number, since 2 + 2 + 124 + 0 + 1 + 1 + 534 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11434578 + ... + 11453909.

It is an arithmetic number, because the mean of its divisors is an integer number (15449729400).

Almost surely, 2^221240115342 is an apocalyptic number.

221240115342 is an abundant number, since it is smaller than the sum of its proper divisors (273151225458).

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

221240115342 is a wasteful number, since it uses less digits than its factorization.

221240115342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888677 (or 22888671 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 221240115342 its reverse (243511042122), we get a palindrome (464751157464).

The spelling of 221240115342 in words is "two hundred twenty-one billion, two hundred forty million, one hundred fifteen thousand, three hundred forty-two".