121320354 has 16 divisors (see below), whose sum is σ = 253190592. Its totient is φ = 38681808.

The previous prime is 121320349. The next prime is 121320359. The reversal of 121320354 is 453023121.

It is an interprime number because it is at equal distance from previous prime (121320349) and next prime (121320359).

It is a self number, because there is not a number n which added to its sum of digits gives 121320354.

It is not an unprimeable number, because it can be changed into a prime (121320359) 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, 439429 + ... + 439704.

It is an arithmetic number, because the mean of its divisors is an integer number (15824412).

Almost surely, 2^121320354 is an apocalyptic number.

121320354 is an abundant number, since it is smaller than the sum of its proper divisors (131870238).

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

121320354 is a wasteful number, since it uses less digits than its factorization.

121320354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879161.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121320354 is about 11014.5519200737. The cubic root of 121320354 is about 495.0448607440.

Adding to 121320354 its reverse (453023121), we get a palindrome (574343475).

The spelling of 121320354 in words is "one hundred twenty-one million, three hundred twenty thousand, three hundred fifty-four".