100120220101209 has 32 divisors (see below), whose sum is σ = 166488742517760. Its totient is φ = 51993275860800.

The previous prime is 100120220101103. The next prime is 100120220101211. The reversal of 100120220101209 is 902101022021001.

It is not a de Polignac number, because 100120220101209 - 2⁷ = 100120220101081 is a prime.

It is a super-2 number, since 2×100120220101209² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (100120220101259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71084802 + ... + 72479579.

It is an arithmetic number, because the mean of its divisors is an integer number (5202773203680).

Almost surely, 2^{100120220101209} is an apocalyptic number.

It is an amenable number.

100120220101209 is a deficient number, since it is larger than the sum of its proper divisors (66368522416551).

100120220101209 is a wasteful number, since it uses less digits than its factorization.

100120220101209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143567421.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 100120220101209 in words is "one hundred trillion, one hundred twenty billion, two hundred twenty million, one hundred one thousand, two hundred nine".