211220102130031 has 2 divisors, whose sum is σ = 211220102130032. Its totient is φ = 211220102130030.

The previous prime is 211220102129977. The next prime is 211220102130109. The reversal of 211220102130031 is 130031201022112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211220102130031 - 2¹³ = 211220102121839 is a prime.

It is a super-2 number, since 2×211220102130031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220102129990 and 211220102130008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211220102830031) 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 as a sum of consecutive naturals, namely, 105610051065015 + 105610051065016.

It is an arithmetic number, because the mean of its divisors is an integer number (105610051065016).

Almost surely, 2^{211220102130031} is an apocalyptic number.

211220102130031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220102130031 is an equidigital number, since it uses as much as digits as its factorization.

211220102130031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211220102130031 its reverse (130031201022112), we get a palindrome (341251303152143).

The spelling of 211220102130031 in words is "two hundred eleven trillion, two hundred twenty billion, one hundred two million, one hundred thirty thousand, thirty-one".