121226651 has 32 divisors (see below), whose sum is σ = 154452480. Its totient is φ = 92606976.

The previous prime is 121226617. The next prime is 121226657. The reversal of 121226651 is 156622121.

It is not a de Polignac number, because 121226651 - 2²⁶ = 54117787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121226651.

It is not an unprimeable number, because it can be changed into a prime (121226657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359555 + ... + 359891.

It is an arithmetic number, because the mean of its divisors is an integer number (4826640).

Almost surely, 2^121226651 is an apocalyptic number.

121226651 is a deficient number, since it is larger than the sum of its proper divisors (33225829).

121226651 is a wasteful number, since it uses less digits than its factorization.

121226651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its digits is 1440, while the sum is 26.

The square root of 121226651 is about 11010.2974982514. The cubic root of 121226651 is about 494.9173769522.

Adding to 121226651 its reverse (156622121), we get a palindrome (277848772).

The spelling of 121226651 in words is "one hundred twenty-one million, two hundred twenty-six thousand, six hundred fifty-one".