121551422 has 4 divisors (see below), whose sum is σ = 182327136. Its totient is φ = 60775710.

The previous prime is 121551413. The next prime is 121551427. The reversal of 121551422 is 224155121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121551427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30387854 + ... + 30387857.

It is an arithmetic number, because the mean of its divisors is an integer number (45581784).

Almost surely, 2^121551422 is an apocalyptic number.

121551422 is a deficient number, since it is larger than the sum of its proper divisors (60775714).

121551422 is an equidigital number, since it uses as much as digits as its factorization.

121551422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60775713.

The product of its digits is 800, while the sum is 23.

The square root of 121551422 is about 11025.0361450655. The cubic root of 121551422 is about 495.3589506079.

The spelling of 121551422 in words is "one hundred twenty-one million, five hundred fifty-one thousand, four hundred twenty-two".