2120012202109 has 4 divisors (see below), whose sum is σ = 2120257383904. Its totient is φ = 2119767020316.

The previous prime is 2120012202107. The next prime is 2120012202163. The reversal of 2120012202109 is 9012022100212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120012202109 - 2¹ = 2120012202107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120012202109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120012202103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122577927 + ... + 122595220.

It is an arithmetic number, because the mean of its divisors is an integer number (530064345976).

Almost surely, 2^{2120012202109} is an apocalyptic number.

It is an amenable number.

2120012202109 is a deficient number, since it is larger than the sum of its proper divisors (245181795).

2120012202109 is an equidigital number, since it uses as much as digits as its factorization.

2120012202109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245181794.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 2120012202109 in words is "two trillion, one hundred twenty billion, twelve million, two hundred two thousand, one hundred nine".