101220113 has 2 divisors, whose sum is σ = 101220114. Its totient is φ = 101220112.

The previous prime is 101220107. The next prime is 101220137. The reversal of 101220113 is 311022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88209664 + 13010449 = 9392^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220113 - 2¹⁰ = 101219089 is a prime.

It is a super-2 number, since 2×101220113² = 20491022551465538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101220094 and 101220103.

It is not a weakly prime, because it can be changed into another prime (101220013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610056 + 50610057.

It is an arithmetic number, because the mean of its divisors is an integer number (50610057).

Almost surely, 2^101220113 is an apocalyptic number.

It is an amenable number.

101220113 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220113 is an equidigital number, since it uses as much as digits as its factorization.

101220113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 101220113 is about 10060.8206921702. The cubic root of 101220113 is about 466.0390116971.

Adding to 101220113 its reverse (311022101), we get a palindrome (412242214).

The spelling of 101220113 in words is "one hundred one million, two hundred twenty thousand, one hundred thirteen".