308012212220111 has 16 divisors (see below), whose sum is σ = 352425294542400. Its totient is φ = 263702114016768.

The previous prime is 308012212220059. The next prime is 308012212220131. The reversal of 308012212220111 is 111022212210803.

It is a de Polignac number, because none of the positive numbers 2^k-308012212220111 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 (308012212220131) 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, 18465335 + ... + 30935303.

It is an arithmetic number, because the mean of its divisors is an integer number (22026580908900).

Almost surely, 2^{308012212220111} is an apocalyptic number.

308012212220111 is a deficient number, since it is larger than the sum of its proper divisors (44413082322289).

308012212220111 is a wasteful number, since it uses less digits than its factorization.

308012212220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12474098.

The product of its (nonzero) digits is 768, while the sum is 26.

Adding to 308012212220111 its reverse (111022212210803), we get a palindrome (419034424430914).

The spelling of 308012212220111 in words is "three hundred eight trillion, twelve billion, two hundred twelve million, two hundred twenty thousand, one hundred eleven".