101220077 has 12 divisors (see below), whose sum is σ = 117146400. Its totient is φ = 85673928.

The previous prime is 101220059. The next prime is 101220083. The reversal of 101220077 is 770022101.

It is not a de Polignac number, because 101220077 - 2⁶ = 101220013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47174 + ... + 49272.

It is an arithmetic number, because the mean of its divisors is an integer number (9762200).

Almost surely, 2^101220077 is an apocalyptic number.

It is an amenable number.

101220077 is a deficient number, since it is larger than the sum of its proper divisors (15926323).

101220077 is an frugal number, since it uses more digits than its factorization.

101220077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 101220077 is about 10060.8189030516. The cubic root of 101220077 is about 466.0389564466.

Adding to 101220077 its reverse (770022101), we get a palindrome (871242178).

The spelling of 101220077 in words is "one hundred one million, two hundred twenty thousand, seventy-seven".