213111221211000 has 320 divisors, whose sum is σ = 851362417414080. Its totient is φ = 48711136147200.

The previous prime is 213111221210843. The next prime is 213111221211001. The reversal of 213111221211000 is 112122111312.

It is a happy number.

213111221211000 is a `hidden beast` number, since 21 + 311 + 1 + 221 + 2 + 110 + 0 + 0 = 666.

213111221211000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111221211001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 187361767 + ... + 188495766.

It is an arithmetic number, because the mean of its divisors is an integer number (2660507554419).

Almost surely, 2^{213111221211000} is an apocalyptic number.

213111221211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213111221211000 is an abundant number, since it is smaller than the sum of its proper divisors (638251196203080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213111221211000 is a wasteful number, since it uses less digits than its factorization.

213111221211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375857573 (or 375857550 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 213111221211000 its reverse (112122111312), we get a palindrome (213223343322312).

The spelling of 213111221211000 in words is "two hundred thirteen trillion, one hundred eleven billion, two hundred twenty-one million, two hundred eleven thousand".