212101051 has 4 divisors (see below), whose sum is σ = 212152752. Its totient is φ = 212049352.

The previous prime is 212101031. The next prime is 212101079. The reversal of 212101051 is 150101212.

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

It is a cyclic number.

It is not a de Polignac number, because 212101051 - 2⁷ = 212100923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101031) 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, 19111 + ... + 28096.

It is an arithmetic number, because the mean of its divisors is an integer number (53038188).

Almost surely, 2^212101051 is an apocalyptic number.

212101051 is a deficient number, since it is larger than the sum of its proper divisors (51701).

212101051 is an equidigital number, since it uses as much as digits as its factorization.

212101051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51700.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 212101051 is about 14563.6894707351. The cubic root of 212101051 is about 596.3679197237.

Adding to 212101051 its reverse (150101212), we get a palindrome (362202263).

The spelling of 212101051 in words is "two hundred twelve million, one hundred one thousand, fifty-one".