100212021099 has 8 divisors (see below), whose sum is σ = 148462253520. Its totient is φ = 66808014048.

The previous prime is 100212021061. The next prime is 100212021127. The reversal of 100212021099 is 990120212001.

It is not a de Polignac number, because 100212021099 - 2²⁹ = 99675150187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3711556337 = 100212021099 / (1 + 0 + 0 + 2 + 1 + 2 + 0 + 2 + 1 + 0 + 9 + 9).

It is not an unprimeable number, because it can be changed into a prime (100212021059) 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, 1855778142 + ... + 1855778195.

It is an arithmetic number, because the mean of its divisors is an integer number (18557781690).

Almost surely, 2^100212021099 is an apocalyptic number.

100212021099 is a deficient number, since it is larger than the sum of its proper divisors (48250232421).

100212021099 is an equidigital number, since it uses as much as digits as its factorization.

100212021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711556346 (or 3711556340 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

It can be divided in two parts, 10021 and 2021099, that added together give a triangular number (2031120 = T₂₀₁₅).

The spelling of 100212021099 in words is "one hundred billion, two hundred twelve million, twenty-one thousand, ninety-nine".