1201014431551 has 16 divisors (see below), whose sum is σ = 1328328294048. Its totient is φ = 1076726476800.

The previous prime is 1201014431479. The next prime is 1201014431557. The reversal of 1201014431551 is 1551344101021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201014431551 - 2⁷ = 1201014431423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201014431557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5956255 + ... + 6154591.

It is an arithmetic number, because the mean of its divisors is an integer number (83020518378).

Almost surely, 2^{1201014431551} is an apocalyptic number.

1201014431551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201014431551 is a deficient number, since it is larger than the sum of its proper divisors (127313862497).

1201014431551 is a wasteful number, since it uses less digits than its factorization.

1201014431551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205962.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1201014431551 its reverse (1551344101021), we get a palindrome (2752358532572).

The spelling of 1201014431551 in words is "one trillion, two hundred one billion, fourteen million, four hundred thirty-one thousand, five hundred fifty-one".