11111220440342 has 24 divisors (see below), whose sum is σ = 18325194753600. Its totient is φ = 5049050787440.

The previous prime is 11111220440303. The next prime is 11111220440381. The reversal of 11111220440342 is 24304402211111.

It is an interprime number because it is at equal distance from previous prime (11111220440303) and next prime (11111220440381).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6021617 + ... + 7647372.

It is an arithmetic number, because the mean of its divisors is an integer number (763549781400).

Almost surely, 2^{11111220440342} is an apocalyptic number.

11111220440342 is a deficient number, since it is larger than the sum of its proper divisors (7213974313258).

11111220440342 is a wasteful number, since it uses less digits than its factorization.

11111220440342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13672372 (or 13672361 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 11111220440342 its reverse (24304402211111), we get a palindrome (35415622651453).

The spelling of 11111220440342 in words is "eleven trillion, one hundred eleven billion, two hundred twenty million, four hundred forty thousand, three hundred forty-two".