212021121046 has 12 divisors (see below), whose sum is σ = 369955221588. Its totient is φ = 90866194692.

The previous prime is 212021121001. The next prime is 212021121047. The reversal of 212021121046 is 640121120212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021121047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1081740316 + ... + 1081740511.

It is an arithmetic number, because the mean of its divisors is an integer number (30829601799).

Almost surely, 2^212021121046 is an apocalyptic number.

212021121046 is a deficient number, since it is larger than the sum of its proper divisors (157934100542).

212021121046 is a wasteful number, since it uses less digits than its factorization.

212021121046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163480843 (or 2163480836 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212021121046 its reverse (640121120212), we get a palindrome (852142241258).

The spelling of 212021121046 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, forty-six".