312000122011211 has 4 divisors (see below), whose sum is σ = 313151413974624. Its totient is φ = 310848830047800.

The previous prime is 312000122011153. The next prime is 312000122011267. The reversal of 312000122011211 is 112110221000213.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312000122011211 is a prime.

It is a super-2 number, since 2×312000122011211² (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 312000122011211.

It is not an unprimeable number, because it can be changed into a prime (312000122011411) 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, 575645981300 + ... + 575645981841.

It is an arithmetic number, because the mean of its divisors is an integer number (78287853493656).

Almost surely, 2^{312000122011211} is an apocalyptic number.

312000122011211 is a deficient number, since it is larger than the sum of its proper divisors (1151291963413).

312000122011211 is a wasteful number, since it uses less digits than its factorization.

312000122011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151291963412.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 312000122011211 its reverse (112110221000213), we get a palindrome (424110343011424).

The spelling of 312000122011211 in words is "three hundred twelve trillion, one hundred twenty-two million, eleven thousand, two hundred eleven".