101220099 has 8 divisors (see below), whose sum is σ = 135129792. Its totient is φ = 67395240.

The previous prime is 101220083. The next prime is 101220107. The reversal of 101220099 is 990022101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101220099 - 2⁴ = 101220083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101220059) 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, 18369 + ... + 23234.

It is an arithmetic number, because the mean of its divisors is an integer number (16891224).

Almost surely, 2^101220099 is an apocalyptic number.

101220099 is a deficient number, since it is larger than the sum of its proper divisors (33909693).

101220099 is an equidigital number, since it uses as much as digits as its factorization.

101220099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42417.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 101220099 is about 10060.8199964019. The cubic root of 101220099 is about 466.0389902108.

The spelling of 101220099 in words is "one hundred one million, two hundred twenty thousand, ninety-nine".