121151226 has 48 divisors (see below), whose sum is σ = 283832640. Its totient is φ = 34372800.

The previous prime is 121151221. The next prime is 121151227. The reversal of 121151226 is 622151121.

It is a super-2 number, since 2×121151226² = 29355239122606152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121151221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43030 + ... + 45758.

It is an arithmetic number, because the mean of its divisors is an integer number (5913180).

Almost surely, 2^121151226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121151226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141916320).

121151226 is an abundant number, since it is smaller than the sum of its proper divisors (162681414).

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

121151226 is a wasteful number, since it uses less digits than its factorization.

121151226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899 (or 2892 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 121151226 is about 11006.8717626763. The cubic root of 121151226 is about 494.8147128175.

The spelling of 121151226 in words is "one hundred twenty-one million, one hundred fifty-one thousand, two hundred twenty-six".