121025235320 has 32 divisors (see below), whose sum is σ = 297061942320. Its totient is φ = 44009176320.

The previous prime is 121025235293. The next prime is 121025235341. The reversal of 121025235320 is 23532520121.

It is a happy number.

It is a super-2 number, since 2×121025235320² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121025235320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137528237 + ... + 137529116.

Almost surely, 2^121025235320 is an apocalyptic number.

121025235320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121025235320 is an abundant number, since it is smaller than the sum of its proper divisors (176036707000).

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

121025235320 is a wasteful number, since it uses less digits than its factorization.

121025235320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275057375 (or 275057371 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 121025235320 its reverse (23532520121), we get a palindrome (144557755441).

The spelling of 121025235320 in words is "one hundred twenty-one billion, twenty-five million, two hundred thirty-five thousand, three hundred twenty".