121213404412 has 12 divisors (see below), whose sum is σ = 212286263056. Its totient is φ = 60560186400.

The previous prime is 121213404401. The next prime is 121213404439. The reversal of 121213404412 is 214404312121.

It is a super-2 number, since 2×121213404412² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11623089 + ... + 11633512.

Almost surely, 2^121213404412 is an apocalyptic number.

It is an amenable number.

121213404412 is a deficient number, since it is larger than the sum of its proper divisors (91072858644).

121213404412 is a wasteful number, since it uses less digits than its factorization.

121213404412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23257908 (or 23257906 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121213404412 its reverse (214404312121), we get a palindrome (335617716533).

It can be divided in two parts, 121213 and 404412, that added together give a square (525625 = 725²).

The spelling of 121213404412 in words is "one hundred twenty-one billion, two hundred thirteen million, four hundred four thousand, four hundred twelve".