1213555151254 has 16 divisors (see below), whose sum is σ = 1846075311360. Its totient is φ = 598197678120.

The previous prime is 1213555151239. The next prime is 1213555151279. The reversal of 1213555151254 is 4521515553121.

It is a super-2 number, since 2×1213555151254² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2386597 + ... + 2850079.

It is an arithmetic number, because the mean of its divisors is an integer number (115379706960).

Almost surely, 2^{1213555151254} is an apocalyptic number.

1213555151254 is a deficient number, since it is larger than the sum of its proper divisors (632520160106).

1213555151254 is a wasteful number, since it uses less digits than its factorization.

1213555151254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481995.

The product of its digits is 150000, while the sum is 40.

The spelling of 1213555151254 in words is "one trillion, two hundred thirteen billion, five hundred fifty-five million, one hundred fifty-one thousand, two hundred fifty-four".