1213451424155 has 16 divisors (see below), whose sum is σ = 1457851613184. Its totient is φ = 969621727200.

The previous prime is 1213451424139. The next prime is 1213451424181. The reversal of 1213451424155 is 5514241543121.

It is not a de Polignac number, because 1213451424155 - 2⁴ = 1213451424139 is a prime.

It is a Duffinian 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, 19899122 + ... + 19960008.

It is an arithmetic number, because the mean of its divisors is an integer number (91115725824).

Almost surely, 2^{1213451424155} is an apocalyptic number.

1213451424155 is a deficient number, since it is larger than the sum of its proper divisors (244400189029).

1213451424155 is a wasteful number, since it uses less digits than its factorization.

1213451424155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65506.

The product of its digits is 96000, while the sum is 38.

Adding to 1213451424155 its reverse (5514241543121), we get a palindrome (6727692967276).

The spelling of 1213451424155 in words is "one trillion, two hundred thirteen billion, four hundred fifty-one million, four hundred twenty-four thousand, one hundred fifty-five".