212201630551 has 8 divisors (see below), whose sum is σ = 212443619408. Its totient is φ = 211959720000.

The previous prime is 212201630521. The next prime is 212201630611. The reversal of 212201630551 is 155036102212.

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

It is a 6-Lehmer number, since φ(212201630551) divides (212201630551-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 212201630551 - 2⁷ = 212201630423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201630521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6669541 + ... + 6701281.

It is an arithmetic number, because the mean of its divisors is an integer number (26555452426).

Almost surely, 2^212201630551 is an apocalyptic number.

212201630551 is the 206011-st centered decagonal number.

212201630551 is a deficient number, since it is larger than the sum of its proper divisors (241988857).

212201630551 is a wasteful number, since it uses less digits than its factorization.

212201630551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39153.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 212201630551 its reverse (155036102212), we get a palindrome (367237732763).

The spelling of 212201630551 in words is "two hundred twelve billion, two hundred one million, six hundred thirty thousand, five hundred fifty-one".