212021119993 has 4 divisors (see below), whose sum is σ = 212024879460. Its totient is φ = 212017360528.

The previous prime is 212021119967. The next prime is 212021119997. The reversal of 212021119993 is 399911120212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158146996329 + 53874123664 = 397677^2 + 232108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021119993 is a prime.

It is a super-2 number, since 2×212021119993² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021119997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793830 + ... + 1908367.

It is an arithmetic number, because the mean of its divisors is an integer number (53006219865).

Almost surely, 2^212021119993 is an apocalyptic number.

It is an amenable number.

212021119993 is a deficient number, since it is larger than the sum of its proper divisors (3759467).

212021119993 is an equidigital number, since it uses as much as digits as its factorization.

212021119993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759466.

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 212021119993 in words is "two hundred twelve billion, twenty-one million, one hundred nineteen thousand, nine hundred ninety-three".