1231212211022 has 8 divisors (see below), whose sum is σ = 1846946726856. Its totient is φ = 615563302072.

The previous prime is 1231212211003. The next prime is 1231212211037. The reversal of 1231212211022 is 2201122121321.

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

It is a junction number, because it is equal to n+sod(n) for n = 1231212210985 and 1231212211003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21365753 + ... + 21423300.

It is an arithmetic number, because the mean of its divisors is an integer number (230868340857).

Almost surely, 2^{1231212211022} is an apocalyptic number.

1231212211022 is a deficient number, since it is larger than the sum of its proper divisors (615734515834).

1231212211022 is a wasteful number, since it uses less digits than its factorization.

1231212211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42803442.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1231212211022 its reverse (2201122121321), we get a palindrome (3432334332343).

The spelling of 1231212211022 in words is "one trillion, two hundred thirty-one billion, two hundred twelve million, two hundred eleven thousand, twenty-two".