101421553115 has 16 divisors (see below), whose sum is σ = 126080323200. Its totient is φ = 78228834432.

The previous prime is 101421553091. The next prime is 101421553127. The reversal of 101421553115 is 511355124101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101421553115 - 2¹⁰ = 101421552091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390467 + ... + 596076.

It is an arithmetic number, because the mean of its divisors is an integer number (7880020200).

Almost surely, 2^101421553115 is an apocalyptic number.

101421553115 is a deficient number, since it is larger than the sum of its proper divisors (24658770085).

101421553115 is an equidigital number, since it uses as much as digits as its factorization.

101421553115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987286.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 101421553115 its reverse (511355124101), we get a palindrome (612776677216).

The spelling of 101421553115 in words is "one hundred one billion, four hundred twenty-one million, five hundred fifty-three thousand, one hundred fifteen".