101554121 has 4 divisors (see below), whose sum is σ = 101577744. Its totient is φ = 101530500.

The previous prime is 101554097. The next prime is 101554129. The reversal of 101554121 is 121455101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121455101 = 1579 ⋅76919.

It is a cyclic number.

It is not a de Polignac number, because 101554121 - 2¹⁰ = 101553097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101554093 and 101554102.

It is not an unprimeable number, because it can be changed into a prime (101554129) 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, 3335 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (25394436).

Almost surely, 2^101554121 is an apocalyptic number.

It is an amenable number.

101554121 is a deficient number, since it is larger than the sum of its proper divisors (23623).

101554121 is an equidigital number, since it uses as much as digits as its factorization.

101554121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23622.

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

The square root of 101554121 is about 10077.4064619822. The cubic root of 101554121 is about 466.5510635986.

The spelling of 101554121 in words is "one hundred one million, five hundred fifty-four thousand, one hundred twenty-one".