211220211213131 has 8 divisors (see below), whose sum is σ = 211394369120304. Its totient is φ = 211046058810720.

The previous prime is 211220211213073. The next prime is 211220211213139. The reversal of 211220211213131 is 131312112022112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211220211213131 is a prime.

It is a super-2 number, since 2×211220211213131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211220211213097 and 211220211213106.

It is not an unprimeable number, because it can be changed into a prime (211220211213139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77246516 + ... + 79934126.

It is an arithmetic number, because the mean of its divisors is an integer number (26424296140038).

Almost surely, 2^{211220211213131} is an apocalyptic number.

211220211213131 is a deficient number, since it is larger than the sum of its proper divisors (174157907173).

211220211213131 is a wasteful number, since it uses less digits than its factorization.

211220211213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752381.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 211220211213131 its reverse (131312112022112), we get a palindrome (342532323235243).

The spelling of 211220211213131 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred eleven million, two hundred thirteen thousand, one hundred thirty-one".