121404202404440 has 32 divisors (see below), whose sum is σ = 273159795080880. Its totient is φ = 48561620575872.

The previous prime is 121404202404439. The next prime is 121404202404451. The reversal of 121404202404440 is 44404202404121.

It is a super-2 number, since 2×121404202404440² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121404202404397 and 121404202404406.

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, 45168959 + ... + 47781201.

Almost surely, 2^{121404202404440} is an apocalyptic number.

121404202404440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121404202404440 is an abundant number, since it is smaller than the sum of its proper divisors (151755592676440).

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

121404202404440 is a wasteful number, since it uses less digits than its factorization.

121404202404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774131 (or 3774127 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 121404202404440 its reverse (44404202404121), we get a palindrome (165808404808561).

The spelling of 121404202404440 in words is "one hundred twenty-one trillion, four hundred four billion, two hundred two million, four hundred four thousand, four hundred forty".