312212006212143 has 4 divisors (see below), whose sum is σ = 416282674949528. Its totient is φ = 208141337474760.

The previous prime is 312212006212133. The next prime is 312212006212147. The reversal of 312212006212143 is 341212600212213.

It is a happy number.

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

It is not a de Polignac number, because 312212006212143 - 2¹⁸ = 312212005949999 is a prime.

It is a super-2 number, since 2×312212006212143² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312212006212143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212006212147) 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, 52035334368688 + ... + 52035334368693.

It is an arithmetic number, because the mean of its divisors is an integer number (104070668737382).

Almost surely, 2^{312212006212143} is an apocalyptic number.

312212006212143 is a deficient number, since it is larger than the sum of its proper divisors (104070668737385).

312212006212143 is a wasteful number, since it uses less digits than its factorization.

312212006212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104070668737384.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 312212006212143 its reverse (341212600212213), we get a palindrome (653424606424356).

The spelling of 312212006212143 in words is "three hundred twelve trillion, two hundred twelve billion, six million, two hundred twelve thousand, one hundred forty-three".