101426221 has 4 divisors (see below), whose sum is σ = 109228252. Its totient is φ = 93624192.

The previous prime is 101426219. The next prime is 101426279. The reversal of 101426221 is 122624101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122624101 = 191 ⋅642011.

It can be written as a sum of positive squares in 2 ways, for example, as 18361225 + 83064996 = 4285^2 + 9114^2 .

It is a cyclic number.

It is not a de Polignac number, because 101426221 - 2¹ = 101426219 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 (101426621) 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, 3900996 + ... + 3901021.

It is an arithmetic number, because the mean of its divisors is an integer number (27307063).

Almost surely, 2^101426221 is an apocalyptic number.

It is an amenable number.

101426221 is a deficient number, since it is larger than the sum of its proper divisors (7802031).

101426221 is an equidigital number, since it uses as much as digits as its factorization.

101426221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802030.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 101426221 is about 10071.0585838828. The cubic root of 101426221 is about 466.3551189838.

The spelling of 101426221 in words is "one hundred one million, four hundred twenty-six thousand, two hundred twenty-one".