121045351421 has 8 divisors (see below), whose sum is σ = 121370167680. Its totient is φ = 120720848688.

The previous prime is 121045351417. The next prime is 121045351433. The reversal of 121045351421 is 124153540121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121045351421 - 2² = 121045351417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121045351621) 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, 705275 + ... + 859943.

It is an arithmetic number, because the mean of its divisors is an integer number (15171270960).

Almost surely, 2^121045351421 is an apocalyptic number.

It is an amenable number.

121045351421 is a deficient number, since it is larger than the sum of its proper divisors (324816259).

121045351421 is a wasteful number, since it uses less digits than its factorization.

121045351421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156763.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 121045351421 its reverse (124153540121), we get a palindrome (245198891542).

The spelling of 121045351421 in words is "one hundred twenty-one billion, forty-five million, three hundred fifty-one thousand, four hundred twenty-one".