1221302103201 has 6 divisors (see below), whose sum is σ = 1764103037970. Its totient is φ = 814201402128.

The previous prime is 1221302103167. The next prime is 1221302103277. The reversal of 1221302103201 is 1023012031221.

1221302103201 is a `hidden beast` number, since 1 + 2 + 2 + 130 + 210 + 320 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 645972268176 + 575329835025 = 803724^2 + 758505^2 .

It is not a de Polignac number, because 1221302103201 - 2¹³ = 1221302095009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221302103001) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 67850116836 + ... + 67850116853.

It is an arithmetic number, because the mean of its divisors is an integer number (294017172995).

Almost surely, 2^{1221302103201} is an apocalyptic number.

It is an amenable number.

1221302103201 is a deficient number, since it is larger than the sum of its proper divisors (542800934769).

1221302103201 is a wasteful number, since it uses less digits than its factorization.

1221302103201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135700233695 (or 135700233692 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1221302103201 its reverse (1023012031221), we get a palindrome (2244314134422).

The spelling of 1221302103201 in words is "one trillion, two hundred twenty-one billion, three hundred two million, one hundred three thousand, two hundred one".