121025001456 has 60 divisors (see below), whose sum is σ = 341699321808. Its totient is φ = 39984655872.

The previous prime is 121025001451. The next prime is 121025001479. The reversal of 121025001456 is 654100520121.

121025001456 is a `hidden beast` number, since 1 + 2 + 10 + 2 + 500 + 145 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121025001451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3702540 + ... + 3735083.

Almost surely, 2^121025001456 is an apocalyptic number.

121025001456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121025001456 is an abundant number, since it is smaller than the sum of its proper divisors (220674320352).

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

121025001456 is a wasteful number, since it uses less digits than its factorization.

121025001456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437750 (or 7437741 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 121025001456 its reverse (654100520121), we get a palindrome (775125521577).

The spelling of 121025001456 in words is "one hundred twenty-one billion, twenty-five million, one thousand, four hundred fifty-six".