121143770 has 16 divisors (see below), whose sum is σ = 237882528. Its totient is φ = 44052240.

The previous prime is 121143761. The next prime is 121143773. The reversal of 121143770 is 77341121.

It is a happy number.

It is a super-3 number, since 3×121143770³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121143773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550544 + ... + 550763.

It is an arithmetic number, because the mean of its divisors is an integer number (14867658).

Almost surely, 2^121143770 is an apocalyptic number.

121143770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121143770 is a deficient number, since it is larger than the sum of its proper divisors (116738758).

121143770 is a wasteful number, since it uses less digits than its factorization.

121143770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101325.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 121143770 is about 11006.5330599603. The cubic root of 121143770 is about 494.8045618288.

Adding to 121143770 its reverse (77341121), we get a palindrome (198484891).

The spelling of 121143770 in words is "one hundred twenty-one million, one hundred forty-three thousand, seven hundred seventy".