1551332230121 has 4 divisors (see below), whose sum is σ = 1551334849152. Its totient is φ = 1551329611092.

The previous prime is 1551332230111. The next prime is 1551332230127. The reversal of 1551332230121 is 1210322331551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551332230121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551332230127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48236 + ... + 1762098.

It is an arithmetic number, because the mean of its divisors is an integer number (387833712288).

Almost surely, 2^{1551332230121} is an apocalyptic number.

It is an amenable number.

1551332230121 is a deficient number, since it is larger than the sum of its proper divisors (2619031).

1551332230121 is an equidigital number, since it uses as much as digits as its factorization.

1551332230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619030.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 1551332230121 its reverse (1210322331551), we get a palindrome (2761654561672).

The spelling of 1551332230121 in words is "one trillion, five hundred fifty-one billion, three hundred thirty-two million, two hundred thirty thousand, one hundred twenty-one".