1242221102012 has 48 divisors (see below), whose sum is σ = 2448336844800. Its totient is φ = 546359380800.

The previous prime is 1242221101999. The next prime is 1242221102029. The reversal of 1242221102012 is 2102011222421.

It is a happy number.

It is a super-2 number, since 2×1242221102012² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 11015489 + ... + 11127687.

It is an arithmetic number, because the mean of its divisors is an integer number (51007017600).

Almost surely, 2^{1242221102012} is an apocalyptic number.

It is an amenable number.

1242221102012 is a deficient number, since it is larger than the sum of its proper divisors (1206115742788).

1242221102012 is a wasteful number, since it uses less digits than its factorization.

1242221102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120362 (or 120360 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1242221102012 its reverse (2102011222421), we get a palindrome (3344232324433).

The spelling of 1242221102012 in words is "one trillion, two hundred forty-two billion, two hundred twenty-one million, one hundred two thousand, twelve".