12121456662 has 48 divisors (see below), whose sum is σ = 30523783680. Its totient is φ = 3404571696.

The previous prime is 12121456649. The next prime is 12121456679. The reversal of 12121456662 is 26665412121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807838 + ... + 822705.

It is an arithmetic number, because the mean of its divisors is an integer number (635912160).

Almost surely, 2^12121456662 is an apocalyptic number.

12121456662 is an abundant number, since it is smaller than the sum of its proper divisors (18402327018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121456662 is a wasteful number, since it uses less digits than its factorization.

12121456662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630617 (or 1630614 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

Adding to 12121456662 its reverse (26665412121), we get a palindrome (38786868783).

The spelling of 12121456662 in words is "twelve billion, one hundred twenty-one million, four hundred fifty-six thousand, six hundred sixty-two".