10215551336221 has 12 divisors (see below), whose sum is σ = 12832758704416. Its totient is φ = 7960169871720.

The previous prime is 10215551336203. The next prime is 10215551336261. The reversal of 10215551336221 is 12263315551201.

It is not a de Polignac number, because 10215551336221 - 2⁷ = 10215551336093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10215551336261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6030430875 + ... + 6030432568.

Almost surely, 2^{10215551336221} is an apocalyptic number.

10215551336221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10215551336221 is a deficient number, since it is larger than the sum of its proper divisors (2617207368195).

10215551336221 is a wasteful number, since it uses less digits than its factorization.

10215551336221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12060863472 (or 12060863461 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

Adding to 10215551336221 its reverse (12263315551201), we get a palindrome (22478866887422).

The spelling of 10215551336221 in words is "ten trillion, two hundred fifteen billion, five hundred fifty-one million, three hundred thirty-six thousand, two hundred twenty-one".