1242221240313 has 12 divisors (see below), whose sum is σ = 1794336118848. Its totient is φ = 828139855320.

The previous prime is 1242221240269. The next prime is 1242221240317. The reversal of 1242221240313 is 3130421222421.

1242221240313 is a `hidden beast` number, since 1 + 2 + 4 + 222 + 124 + 0 + 313 = 666.

It is not a de Polignac number, because 1242221240313 - 2¹³ = 1242221232121 is a prime.

It is a super-2 number, since 2×1242221240313² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242221240317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500356 + ... + 1653722.

It is an arithmetic number, because the mean of its divisors is an integer number (149528009904).

Almost surely, 2^{1242221240313} is an apocalyptic number.

It is an amenable number.

1242221240313 is a deficient number, since it is larger than the sum of its proper divisors (552114878535).

1242221240313 is a wasteful number, since it uses less digits than its factorization.

1242221240313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273044 (or 1273041 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1242221240313 its reverse (3130421222421), we get a palindrome (4372642462734).

The spelling of 1242221240313 in words is "one trillion, two hundred forty-two billion, two hundred twenty-one million, two hundred forty thousand, three hundred thirteen".