1215030401205 has 16 divisors (see below), whose sum is σ = 1944088215360. Its totient is φ = 648003022848.

The previous prime is 1215030401147. The next prime is 1215030401213. The reversal of 1215030401205 is 5021040305121.

It is a happy number.

It is not a de Polignac number, because 1215030401205 - 2⁶ = 1215030401141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38860 + ... + 1559349.

It is an arithmetic number, because the mean of its divisors is an integer number (121505513460).

Almost surely, 2^{1215030401205} is an apocalyptic number.

1215030401205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1215030401205 is a deficient number, since it is larger than the sum of its proper divisors (729057814155).

1215030401205 is a wasteful number, since it uses less digits than its factorization.

1215030401205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648900.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 1215030401205 its reverse (5021040305121), we get a palindrome (6236070706326).

The spelling of 1215030401205 in words is "one trillion, two hundred fifteen billion, thirty million, four hundred one thousand, two hundred five".