12312201022 has 32 divisors (see below), whose sum is σ = 20504441088. Its totient is φ = 5497800000.

The previous prime is 12312200959. The next prime is 12312201061. The reversal of 12312201022 is 22010221321.

It is a happy number.

It is a super-2 number, since 2×12312201022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12312200987 and 12312201005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424897 + ... + 452947.

It is an arithmetic number, because the mean of its divisors is an integer number (640763784).

Almost surely, 2^12312201022 is an apocalyptic number.

12312201022 is a deficient number, since it is larger than the sum of its proper divisors (8192240066).

12312201022 is a wasteful number, since it uses less digits than its factorization.

12312201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28416.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12312201022 its reverse (22010221321), we get a palindrome (34322422343).

The spelling of 12312201022 in words is "twelve billion, three hundred twelve million, two hundred one thousand, twenty-two".