101220501 has 8 divisors (see below), whose sum is σ = 136477440. Its totient is φ = 66721952.

The previous prime is 101220491. The next prime is 101220503. The reversal of 101220501 is 105022101.

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 101220501 - 2¹⁵ = 101187733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220503) 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, 189285 + ... + 189818.

It is an arithmetic number, because the mean of its divisors is an integer number (17059680).

Almost surely, 2^101220501 is an apocalyptic number.

It is an amenable number.

101220501 is a deficient number, since it is larger than the sum of its proper divisors (35256939).

101220501 is an equidigital number, since it uses as much as digits as its factorization.

101220501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379195.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 101220501 is about 10060.8399748729. The cubic root of 101220501 is about 466.0396071747.

Adding to 101220501 its reverse (105022101), we get a palindrome (206242602).

The spelling of 101220501 in words is "one hundred one million, two hundred twenty thousand, five hundred one".