1215213412054 has 32 divisors (see below), whose sum is σ = 1836377174016. Its totient is φ = 603106512000.

The previous prime is 1215213412051. The next prime is 1215213412073. The reversal of 1215213412054 is 4502143125121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215213412051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255778179 + ... + 255782929.

It is an arithmetic number, because the mean of its divisors is an integer number (57386786688).

Almost surely, 2^{1215213412054} is an apocalyptic number.

1215213412054 is a deficient number, since it is larger than the sum of its proper divisors (621163761962).

1215213412054 is a wasteful number, since it uses less digits than its factorization.

1215213412054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6540.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1215213412054 its reverse (4502143125121), we get a palindrome (5717356537175).

The spelling of 1215213412054 in words is "one trillion, two hundred fifteen billion, two hundred thirteen million, four hundred twelve thousand, fifty-four".