122002639668 has 288 divisors, whose sum is σ = 402010312704. Its totient is φ = 31490840448.

The previous prime is 122002639567. The next prime is 122002639687. The reversal of 122002639668 is 866936200221.

122002639668 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 0 + 2 + 639 + 6 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4142571 + ... + 4171917.

Almost surely, 2^122002639668 is an apocalyptic number.

122002639668 is a gapful number since it is divisible by the number (18) 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 122002639668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201005156352).

122002639668 is an abundant number, since it is smaller than the sum of its proper divisors (280007673036).

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

122002639668 is a wasteful number, since it uses less digits than its factorization.

122002639668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29433 (or 29419 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

Adding to 122002639668 its reverse (866936200221), we get a palindrome (988938839889).

The spelling of 122002639668 in words is "one hundred twenty-two billion, two million, six hundred thirty-nine thousand, six hundred sixty-eight".