1213541013451 has 8 divisors (see below), whose sum is σ = 1306912559904. Its totient is φ = 1120172643840.

The previous prime is 1213541013439. The next prime is 1213541013467. The reversal of 1213541013451 is 1543101453121.

It is a happy number.

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 1213541013451 - 2⁷ = 1213541013323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213541013491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30930 + ... + 1558216.

It is an arithmetic number, because the mean of its divisors is an integer number (163364069988).

Almost surely, 2^{1213541013451} is an apocalyptic number.

1213541013451 is a deficient number, since it is larger than the sum of its proper divisors (93371546453).

1213541013451 is a wasteful number, since it uses less digits than its factorization.

1213541013451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588421.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1213541013451 its reverse (1543101453121), we get a palindrome (2756642466572).

The spelling of 1213541013451 in words is "one trillion, two hundred thirteen billion, five hundred forty-one million, thirteen thousand, four hundred fifty-one".