212551001 has 16 divisors (see below), whose sum is σ = 235334400. Its totient is φ = 190764288.

The previous prime is 212550971. The next prime is 212551013. The reversal of 212551001 is 100155212.

212551001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212551001 - 2¹⁴ = 212534617 is a prime.

It is a super-2 number, since 2×212551001² = 90355856052204002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212551301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67265 + ... + 70353.

It is an arithmetic number, because the mean of its divisors is an integer number (14708400).

Almost surely, 2^212551001 is an apocalyptic number.

It is an amenable number.

212551001 is a deficient number, since it is larger than the sum of its proper divisors (22783399).

212551001 is a wasteful number, since it uses less digits than its factorization.

212551001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248.

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

The square root of 212551001 is about 14579.1289520328. The cubic root of 212551001 is about 596.7893324086.

The spelling of 212551001 in words is "two hundred twelve million, five hundred fifty-one thousand, one".