12220121022009 has 8 divisors (see below), whose sum is σ = 16294710772800. Its totient is φ = 8146139309616.

The previous prime is 12220121021989. The next prime is 12220121022029. The reversal of 12220121022009 is 90022012102221.

It is an interprime number because it is at equal distance from previous prime (12220121021989) and next prime (12220121022029).

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

It is not a de Polignac number, because 12220121022009 - 2¹³ = 12220121013817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12220121022009.

It is not an unprimeable number, because it can be changed into a prime (12220121022029) 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, 151962702 + ... + 152043095.

It is an arithmetic number, because the mean of its divisors is an integer number (2036838846600).

Almost surely, 2^{12220121022009} is an apocalyptic number.

It is an amenable number.

12220121022009 is a deficient number, since it is larger than the sum of its proper divisors (4074589750791).

12220121022009 is a wasteful number, since it uses less digits than its factorization.

12220121022009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304019199.

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

It can be divided in two parts, 1222012 and 1022009, that added together give a triangular number (2244021 = T₂₁₁₈).

The spelling of 12220121022009 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, twenty-two thousand, nine".