122121040040 has 32 divisors (see below), whose sum is σ = 289234044000. Its totient is φ = 46277446464.

The previous prime is 122121040039. The next prime is 122121040049. The reversal of 122121040040 is 40040121221.

It is not an unprimeable number, because it can be changed into a prime (122121040049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80342030 + ... + 80343549.

It is an arithmetic number, because the mean of its divisors is an integer number (9038563875).

Almost surely, 2^122121040040 is an apocalyptic number.

122121040040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121040040 is an abundant number, since it is smaller than the sum of its proper divisors (167113003960).

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

122121040040 is a wasteful number, since it uses less digits than its factorization.

122121040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160685609 (or 160685605 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122121040040 its reverse (40040121221), we get a palindrome (162161161261).

The spelling of 122121040040 in words is "one hundred twenty-two billion, one hundred twenty-one million, forty thousand, forty".