101211220099 has 8 divisors (see below), whose sum is σ = 116223410880. Its totient is φ = 87167557800.

The previous prime is 101211220087. The next prime is 101211220133. The reversal of 101211220099 is 990022112101.

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

It is not a de Polignac number, because 101211220099 - 2⁷ = 101211219971 is a prime.

It is a super-2 number, since 2×101211220099² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101211220039) 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, 242131897 + ... + 242132314.

It is an arithmetic number, because the mean of its divisors is an integer number (14527926360).

Almost surely, 2^101211220099 is an apocalyptic number.

101211220099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

101211220099 is a deficient number, since it is larger than the sum of its proper divisors (15012190781).

101211220099 is a wasteful number, since it uses less digits than its factorization.

101211220099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484264241.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 101211220099 in words is "one hundred one billion, two hundred eleven million, two hundred twenty thousand, ninety-nine".