20112215242 has 16 divisors (see below), whose sum is σ = 34575763392. Its totient is φ = 8595100800.

The previous prime is 20112215213. The next prime is 20112215251. The reversal of 20112215242 is 24251221102.

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, 2029884 + ... + 2039767.

It is an arithmetic number, because the mean of its divisors is an integer number (2160985212).

Almost surely, 2^20112215242 is an apocalyptic number.

20112215242 is a deficient number, since it is larger than the sum of its proper divisors (14463548150).

20112215242 is a wasteful number, since it uses less digits than its factorization.

20112215242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070013.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 20112215242 its reverse (24251221102), we get a palindrome (44363436344).

The spelling of 20112215242 in words is "twenty billion, one hundred twelve million, two hundred fifteen thousand, two hundred forty-two".