101155421 has 8 divisors (see below), whose sum is σ = 103505664. Its totient is φ = 98813520.

The previous prime is 101155381. The next prime is 101155433. The reversal of 101155421 is 124551101.

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 101155421 - 2¹⁰ = 101154397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101155393 and 101155402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101155921) 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, 27056 + ... + 30566.

It is an arithmetic number, because the mean of its divisors is an integer number (12938208).

Almost surely, 2^101155421 is an apocalyptic number.

It is an amenable number.

101155421 is a deficient number, since it is larger than the sum of its proper divisors (2350243).

101155421 is an equidigital number, since it uses as much as digits as its factorization.

101155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 101155421 is about 10057.6051324359. The cubic root of 101155421 is about 465.9397052777.

The spelling of 101155421 in words is "one hundred one million, one hundred fifty-five thousand, four hundred twenty-one".