1213210040242 has 16 divisors (see below), whose sum is σ = 1850704873920. Its totient is φ = 596308921168.

The previous prime is 1213210040233. The next prime is 1213210040303. The reversal of 1213210040242 is 2420400123121.

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, 5912043 + ... + 6113809.

It is an arithmetic number, because the mean of its divisors is an integer number (115669054620).

Almost surely, 2^{1213210040242} is an apocalyptic number.

1213210040242 is a deficient number, since it is larger than the sum of its proper divisors (637494833678).

1213210040242 is a wasteful number, since it uses less digits than its factorization.

1213210040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252785.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1213210040242 its reverse (2420400123121), we get a palindrome (3633610163363).

The spelling of 1213210040242 in words is "one trillion, two hundred thirteen billion, two hundred ten million, forty thousand, two hundred forty-two".