212021112029 has 4 divisors (see below), whose sum is σ = 212786531484. Its totient is φ = 211255692576.

The previous prime is 212021112019. The next prime is 212021112047. The reversal of 212021112029 is 920211120212.

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 107077509529 + 104943602500 = 327227^2 + 323950^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021112029 - 2³² = 207726144733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021111995 and 212021112013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021112019) 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, 382709312 + ... + 382709865.

It is an arithmetic number, because the mean of its divisors is an integer number (53196632871).

Almost surely, 2^212021112029 is an apocalyptic number.

It is an amenable number.

212021112029 is a deficient number, since it is larger than the sum of its proper divisors (765419455).

212021112029 is an equidigital number, since it uses as much as digits as its factorization.

212021112029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765419454.

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

The spelling of 212021112029 in words is "two hundred twelve billion, twenty-one million, one hundred twelve thousand, twenty-nine".