220001212099 has 4 divisors (see below), whose sum is σ = 220017566736. Its totient is φ = 219984857464.

The previous prime is 220001212049. The next prime is 220001212117. The reversal of 220001212099 is 990212100022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990212100022 = 2 ⋅495106050011.

It is a cyclic number.

It is not a de Polignac number, because 220001212099 - 2¹³ = 220001203907 is a prime.

It is a super-3 number, since 3×220001212099³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001212049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8157124 + ... + 8184049.

It is an arithmetic number, because the mean of its divisors is an integer number (55004391684).

Almost surely, 2^220001212099 is an apocalyptic number.

220001212099 is a deficient number, since it is larger than the sum of its proper divisors (16354637).

220001212099 is a wasteful number, since it uses less digits than its factorization.

220001212099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16354636.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 220001212099 in words is "two hundred twenty billion, one million, two hundred twelve thousand, ninety-nine".