121321267270 has 24 divisors (see below), whose sum is σ = 254031879024. Its totient is φ = 41595862896.

The previous prime is 121321267247. The next prime is 121321267279. The reversal of 121321267270 is 72762123121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321267279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123796722 + ... + 123797701.

It is an arithmetic number, because the mean of its divisors is an integer number (10584661626).

Almost surely, 2^121321267270 is an apocalyptic number.

121321267270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121321267270 is an abundant number, since it is smaller than the sum of its proper divisors (132710611754).

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

121321267270 is a wasteful number, since it uses less digits than its factorization.

121321267270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247594444 (or 247594437 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 121321267270 in words is "one hundred twenty-one billion, three hundred twenty-one million, two hundred sixty-seven thousand, two hundred seventy".