21212332203099 has 4 divisors (see below), whose sum is σ = 28283109604136. Its totient is φ = 14141554802064.

The previous prime is 21212332203091. The next prime is 21212332203107. The reversal of 21212332203099 is 99030223321212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21212332203091) and next prime (21212332203107).

It is not a de Polignac number, because 21212332203099 - 2³ = 21212332203091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21212332203091) 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, 3535388700514 + ... + 3535388700519.

It is an arithmetic number, because the mean of its divisors is an integer number (7070777401034).

Almost surely, 2^{21212332203099} is an apocalyptic number.

21212332203099 is a deficient number, since it is larger than the sum of its proper divisors (7070777401037).

21212332203099 is an equidigital number, since it uses as much as digits as its factorization.

21212332203099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070777401036.

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 21212332203099 in words is "twenty-one trillion, two hundred twelve billion, three hundred thirty-two million, two hundred three thousand, ninety-nine".