1213514145221 has 32 divisors (see below), whose sum is σ = 1504484368128. Its totient is φ = 954956021760.

The previous prime is 1213514145191. The next prime is 1213514145223. The reversal of 1213514145221 is 1225414153121.

It is a cyclic number.

It is not a de Polignac number, because 1213514145221 - 2¹⁰ = 1213514144197 is a prime.

It is a super-3 number, since 3×1213514145221³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213514145223) 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 31 ways as a sum of consecutive naturals, for example, 47035301 + ... + 47061093.

It is an arithmetic number, because the mean of its divisors is an integer number (47015136504).

Almost surely, 2^{1213514145221} is an apocalyptic number.

It is an amenable number.

1213514145221 is a deficient number, since it is larger than the sum of its proper divisors (290970222907).

1213514145221 is a wasteful number, since it uses less digits than its factorization.

1213514145221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35501.

The product of its digits is 9600, while the sum is 32.

Adding to 1213514145221 its reverse (1225414153121), we get a palindrome (2438928298342).

The spelling of 1213514145221 in words is "one trillion, two hundred thirteen billion, five hundred fourteen million, one hundred forty-five thousand, two hundred twenty-one".