121022232123406 has 4 divisors (see below), whose sum is σ = 181533348185112. Its totient is φ = 60511116061702.

The previous prime is 121022232123319. The next prime is 121022232123407. The reversal of 121022232123406 is 604321232220121.

It is a happy number.

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

It is a super-2 number, since 2×121022232123406² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022232123407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255558030850 + ... + 30255558030853.

It is an arithmetic number, because the mean of its divisors is an integer number (45383337046278).

Almost surely, 2^{121022232123406} is an apocalyptic number.

121022232123406 is a deficient number, since it is larger than the sum of its proper divisors (60511116061706).

121022232123406 is an equidigital number, since it uses as much as digits as its factorization.

121022232123406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60511116061705.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 121022232123406 its reverse (604321232220121), we get a palindrome (725343464343527).

The spelling of 121022232123406 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred thirty-two million, one hundred twenty-three thousand, four hundred six".