212019015881 has 2 divisors, whose sum is σ = 212019015882. Its totient is φ = 212019015880.

The previous prime is 212019015853. The next prime is 212019015919. The reversal of 212019015881 is 188510910212.

It is an a-pointer prime, because the next prime (212019015919) can be obtained adding 212019015881 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165397569481 + 46621446400 = 406691^2 + 215920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212019015881 is a prime.

It is a super-2 number, since 2×212019015881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212019015581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106009507940 + 106009507941.

It is an arithmetic number, because the mean of its divisors is an integer number (106009507941).

Almost surely, 2^212019015881 is an apocalyptic number.

It is an amenable number.

212019015881 is a deficient number, since it is larger than the sum of its proper divisors (1).

212019015881 is an equidigital number, since it uses as much as digits as its factorization.

212019015881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 38.

The spelling of 212019015881 in words is "two hundred twelve billion, nineteen million, fifteen thousand, eight hundred eighty-one".