121122270 has 128 divisors (see below), whose sum is σ = 345600000. Its totient is φ = 30119040.

The previous prime is 121122269. The next prime is 121122293. The reversal of 121122270 is 72221121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 242481 + ... + 242979.

It is an arithmetic number, because the mean of its divisors is an integer number (2700000).

Almost surely, 2^121122270 is an apocalyptic number.

121122270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172800000).

121122270 is an abundant number, since it is smaller than the sum of its proper divisors (224477730).

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

121122270 is a wasteful number, since it uses less digits than its factorization.

121122270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 121122270 is about 11005.5563239665. The cubic root of 121122270 is about 494.7752882709.

Adding to 121122270 its reverse (72221121), we get a palindrome (193343391).

The spelling of 121122270 in words is "one hundred twenty-one million, one hundred twenty-two thousand, two hundred seventy".