1551120212213 has 8 divisors (see below), whose sum is σ = 1822295074656. Its totient is φ = 1301639338800.

The previous prime is 1551120212137. The next prime is 1551120212303. The reversal of 1551120212213 is 3122120211551.

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 1551120212213 - 2²² = 1551116017909 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 (1551120218213) 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, 5423497103 + ... + 5423497388.

It is an arithmetic number, because the mean of its divisors is an integer number (227786884332).

Almost surely, 2^{1551120212213} is an apocalyptic number.

1551120212213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1551120212213 is a deficient number, since it is larger than the sum of its proper divisors (271174862443).

1551120212213 is a wasteful number, since it uses less digits than its factorization.

1551120212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10846994515.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1551120212213 its reverse (3122120211551), we get a palindrome (4673240423764).

The spelling of 1551120212213 in words is "one trillion, five hundred fifty-one billion, one hundred twenty million, two hundred twelve thousand, two hundred thirteen".