212501051 has 8 divisors (see below), whose sum is σ = 245217024. Its totient is φ = 180374760.

The previous prime is 212501041. The next prime is 212501077. The reversal of 212501051 is 150105212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212501051 is a prime.

It is a super-2 number, since 2×212501051² = 90313393352209202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212501011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146645 + ... + 148086.

It is an arithmetic number, because the mean of its divisors is an integer number (30652128).

Almost surely, 2^212501051 is an apocalyptic number.

212501051 is a deficient number, since it is larger than the sum of its proper divisors (32715973).

212501051 is a wasteful number, since it uses less digits than its factorization.

212501051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294841.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 212501051 is about 14577.4157860713. The cubic root of 212501051 is about 596.7425797666.

Adding to 212501051 its reverse (150105212), we get a palindrome (362606263).

The spelling of 212501051 in words is "two hundred twelve million, five hundred one thousand, fifty-one".