1221101014012 has 24 divisors (see below), whose sum is σ = 2336059676160. Its totient is φ = 553887146160.

The previous prime is 1221101013997. The next prime is 1221101014013. The reversal of 1221101014012 is 2104101011221.

It is a super-2 number, since 2×1221101014012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221101014013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28947918 + ... + 28990069.

It is an arithmetic number, because the mean of its divisors is an integer number (97335819840).

Almost surely, 2^{1221101014012} is an apocalyptic number.

It is an amenable number.

1221101014012 is a deficient number, since it is larger than the sum of its proper divisors (1114958662148).

1221101014012 is a wasteful number, since it uses less digits than its factorization.

1221101014012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57938481 (or 57938479 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1221101014012 its reverse (2104101011221), we get a palindrome (3325202025233).

The spelling of 1221101014012 in words is "one trillion, two hundred twenty-one billion, one hundred one million, fourteen thousand, twelve".