211211020019999 has 8 divisors (see below), whose sum is σ = 215196566365440. Its totient is φ = 207225489702816.

The previous prime is 211211020019981. The next prime is 211211020020001. The reversal of 211211020019999 is 999910020112112.

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

It is a cyclic number.

It is not a de Polignac number, because 211211020019999 - 2¹⁶ = 211211019954463 is a prime.

It is a super-2 number, since 2×211211020019999² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211020019959) 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, 24490754 + ... + 31972160.

It is an arithmetic number, because the mean of its divisors is an integer number (26899570795680).

Almost surely, 2^{211211020019999} is an apocalyptic number.

211211020019999 is a deficient number, since it is larger than the sum of its proper divisors (3985546345441).

211211020019999 is an equidigital number, since it uses as much as digits as its factorization.

211211020019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014129.

The product of its (nonzero) digits is 52488, while the sum is 47.

The spelling of 211211020019999 in words is "two hundred eleven trillion, two hundred eleven billion, twenty million, nineteen thousand, nine hundred ninety-nine".