121122870 has 64 divisors (see below), whose sum is σ = 322548480. Its totient is φ = 28860800.

The previous prime is 121122863. The next prime is 121122877. The reversal of 121122870 is 78221121.

It is an interprime number because it is at equal distance from previous prime (121122863) and next prime (121122877).

It is a self number, because there is not a number n which added to its sum of digits gives 121122870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122877) 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, 16360 + ... + 22580.

It is an arithmetic number, because the mean of its divisors is an integer number (5039820).

Almost surely, 2^121122870 is an apocalyptic number.

121122870 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 121122870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161274240).

121122870 is an abundant number, since it is smaller than the sum of its proper divisors (201425610).

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

121122870 is a wasteful number, since it uses less digits than its factorization.

121122870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 121122870 is about 11005.5835828910. The cubic root of 121122870 is about 494.7761052544.

Adding to 121122870 its reverse (78221121), we get a palindrome (199343991).

The spelling of 121122870 in words is "one hundred twenty-one million, one hundred twenty-two thousand, eight hundred seventy".