121122040 has 64 divisors (see below), whose sum is σ = 295495200. Its totient is φ = 44416512.

The previous prime is 121122037. The next prime is 121122041. The reversal of 121122040 is 40221121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 121122040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84046 + ... + 85474.

Almost surely, 2^121122040 is an apocalyptic number.

121122040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147747600).

121122040 is an abundant number, since it is smaller than the sum of its proper divisors (174373160).

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

121122040 is a wasteful number, since it uses less digits than its factorization.

121122040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121122040 is about 11005.5458746943. The cubic root of 121122040 is about 494.7749750932.

Adding to 121122040 its reverse (40221121), we get a palindrome (161343161).

The spelling of 121122040 in words is "one hundred twenty-one million, one hundred twenty-two thousand, forty".