212220199999 has 32 divisors (see below), whose sum is σ = 227992423680. Its totient is φ = 197164800000.

The previous prime is 212220199987. The next prime is 212220200011. The reversal of 212220199999 is 999991022212.

It is an interprime number because it is at equal distance from previous prime (212220199987) and next prime (212220200011).

It is a cyclic number.

It is not a de Polignac number, because 212220199999 - 2⁵ = 212220199967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220199909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32540859 + ... + 32547379.

It is an arithmetic number, because the mean of its divisors is an integer number (7124763240).

Almost surely, 2^212220199999 is an apocalyptic number.

212220199999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

212220199999 is a deficient number, since it is larger than the sum of its proper divisors (15772223681).

212220199999 is a wasteful number, since it uses less digits than its factorization.

212220199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963.

The product of its (nonzero) digits is 944784, while the sum is 55.

The spelling of 212220199999 in words is "two hundred twelve billion, two hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety-nine".