122121045 has 24 divisors (see below), whose sum is σ = 212011800. Its totient is φ = 65028096.

The previous prime is 122121017. The next prime is 122121061. The reversal of 122121045 is 540121221.

It can be written as a sum of positive squares in 4 ways, for example, as 106929 + 122014116 = 327^2 + 11046^2 .

It is not a de Polignac number, because 122121045 - 2⁶ = 122120981 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32841 + ... + 36369.

It is an arithmetic number, because the mean of its divisors is an integer number (8833825).

Almost surely, 2^122121045 is an apocalyptic number.

122121045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122121045 is a deficient number, since it is larger than the sum of its proper divisors (89890755).

122121045 is a wasteful number, since it uses less digits than its factorization.

122121045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309 (or 4306 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 122121045 is about 11050.8391084116. The cubic root of 122121045 is about 496.1315405651.

Adding to 122121045 its reverse (540121221), we get a palindrome (662242266).

The spelling of 122121045 in words is "one hundred twenty-two million, one hundred twenty-one thousand, forty-five".