121231212322 has 16 divisors (see below), whose sum is σ = 198437317344. Its totient is φ = 55088716000.

The previous prime is 121231212281. The next prime is 121231212329. The reversal of 121231212322 is 223212132121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 121231212293 and 121231212302.

It is not an unprimeable number, because it can be changed into a prime (121231212329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743179 + ... + 891502.

It is an arithmetic number, because the mean of its divisors is an integer number (12402332334).

Almost surely, 2^121231212322 is an apocalyptic number.

121231212322 is a deficient number, since it is larger than the sum of its proper divisors (77206105022).

121231212322 is a wasteful number, since it uses less digits than its factorization.

121231212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638065.

The product of its digits is 576, while the sum is 22.

Adding to 121231212322 its reverse (223212132121), we get a palindrome (344443344443).

The spelling of 121231212322 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred twelve thousand, three hundred twenty-two".