2220121202109 has 8 divisors (see below), whose sum is σ = 3062236140960. Its totient is φ = 1429043532336.

The previous prime is 2220121202083. The next prime is 2220121202149. The reversal of 2220121202109 is 9012021210222.

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

It is not a de Polignac number, because 2220121202109 - 2²⁴ = 2220104424893 is a prime.

It is a super-2 number, since 2×2220121202109² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220121202149) 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, 12759317167 + ... + 12759317340.

It is an arithmetic number, because the mean of its divisors is an integer number (382779517620).

Almost surely, 2^{2220121202109} is an apocalyptic number.

2220121202109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2220121202109 is a deficient number, since it is larger than the sum of its proper divisors (842114938851).

2220121202109 is a wasteful number, since it uses less digits than its factorization.

2220121202109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25518634539.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 2220121202109 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred nine".