212061070021 has 4 divisors (see below), whose sum is σ = 212071104000. Its totient is φ = 212051036044.

The previous prime is 212061070019. The next prime is 212061070057. The reversal of 212061070021 is 120070160212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212061070021 - 2¹ = 212061070019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212061069974 and 212061070001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212061071021) 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, 4985221 + ... + 5027578.

It is an arithmetic number, because the mean of its divisors is an integer number (53017776000).

Almost surely, 2^212061070021 is an apocalyptic number.

It is an amenable number.

212061070021 is a deficient number, since it is larger than the sum of its proper divisors (10033979).

212061070021 is a wasteful number, since it uses less digits than its factorization.

212061070021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10033978.

The product of its (nonzero) digits is 336, while the sum is 22.

The spelling of 212061070021 in words is "two hundred twelve billion, sixty-one million, seventy thousand, twenty-one".