1213555551301 has 8 divisors (see below), whose sum is σ = 1221898306904. Its totient is φ = 1205220556800.

The previous prime is 1213555551283. The next prime is 1213555551331. The reversal of 1213555551301 is 1031555553121.

It can be written as a sum of positive squares in 4 ways, for example, as 168255836100 + 1045299715201 = 410190^2 + 1022399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213555551301 - 2¹⁵ = 1213555518533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213555551331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626300 + ... + 2252101.

It is an arithmetic number, because the mean of its divisors is an integer number (152737288363).

Almost surely, 2^{1213555551301} is an apocalyptic number.

It is an amenable number.

1213555551301 is a deficient number, since it is larger than the sum of its proper divisors (8342755603).

1213555551301 is a wasteful number, since it uses less digits than its factorization.

1213555551301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880551.

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 1213555551301 in words is "one trillion, two hundred thirteen billion, five hundred fifty-five million, five hundred fifty-one thousand, three hundred one".