101220853 has 4 divisors (see below), whose sum is σ = 102731680. Its totient is φ = 99710028.

The previous prime is 101220803. The next prime is 101220869. The reversal of 101220853 is 358022101.

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: 358022101 = 37 ⋅9676273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101220853 is a prime.

It is a super-2 number, since 2×101220853² = 20491322164095218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755313 + ... + 755446.

It is an arithmetic number, because the mean of its divisors is an integer number (25682920).

Almost surely, 2^101220853 is an apocalyptic number.

It is an amenable number.

101220853 is a deficient number, since it is larger than the sum of its proper divisors (1510827).

101220853 is an equidigital number, since it uses as much as digits as its factorization.

101220853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510826.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 101220853 is about 10060.8574684268. The cubic root of 101220853 is about 466.0401474004.

Adding to 101220853 its reverse (358022101), we get a palindrome (459242954).

The spelling of 101220853 in words is "one hundred one million, two hundred twenty thousand, eight hundred fifty-three".