211220311011213 has 8 divisors (see below), whose sum is σ = 321859521540928. Its totient is φ = 120697320577824.

The previous prime is 211220311011211. The next prime is 211220311011221. The reversal of 211220311011213 is 312110113022112.

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

It is not a de Polignac number, because 211220311011213 - 2¹ = 211220311011211 is a prime.

It is a super-2 number, since 2×211220311011213² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10058110048153 = 211220311011213 / (2 + 1 + 1 + 2 + 2 + 0 + 3 + 1 + 1 + 0 + 1 + 1 + 2 + 1 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 211220311011213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220311011211) 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, 5029055024056 + ... + 5029055024097.

It is an arithmetic number, because the mean of its divisors is an integer number (40232440192616).

Almost surely, 2^{211220311011213} is an apocalyptic number.

It is an amenable number.

211220311011213 is a deficient number, since it is larger than the sum of its proper divisors (110639210529715).

211220311011213 is a wasteful number, since it uses less digits than its factorization.

211220311011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10058110048163.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 211220311011213 its reverse (312110113022112), we get a palindrome (523330424033325).

The spelling of 211220311011213 in words is "two hundred eleven trillion, two hundred twenty billion, three hundred eleven million, eleven thousand, two hundred thirteen".