121421330012 has 6 divisors (see below), whose sum is σ = 212487327528. Its totient is φ = 60710665004.

The previous prime is 121421329999. The next prime is 121421330047. The reversal of 121421330012 is 210033124121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15177666248 + ... + 15177666255.

It is an arithmetic number, because the mean of its divisors is an integer number (35414554588).

Almost surely, 2^121421330012 is an apocalyptic number.

It is an amenable number.

121421330012 is a deficient number, since it is larger than the sum of its proper divisors (91065997516).

121421330012 is a wasteful number, since it uses less digits than its factorization.

121421330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30355332507 (or 30355332505 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121421330012 its reverse (210033124121), we get a palindrome (331454454133).

The spelling of 121421330012 in words is "one hundred twenty-one billion, four hundred twenty-one million, three hundred thirty thousand, twelve".