122122402020 has 288 divisors, whose sum is σ = 385863004800. Its totient is φ = 31238203392.

The previous prime is 122122401977. The next prime is 122122402037. The reversal of 122122402020 is 20204221221.

122122402020 is a `hidden beast` number, since 1 + 221 + 2 + 240 + 202 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122122401984 and 122122402002.

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, 291461371 + ... + 291461789.

It is an arithmetic number, because the mean of its divisors is an integer number (1339802100).

Almost surely, 2^122122402020 is an apocalyptic number.

122122402020 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 122122402020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192931502400).

122122402020 is an abundant number, since it is smaller than the sum of its proper divisors (263740602780).

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

122122402020 is a wasteful number, since it uses less digits than its factorization.

122122402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 122122402020 its reverse (20204221221), we get a palindrome (142326623241).

The spelling of 122122402020 in words is "one hundred twenty-two billion, one hundred twenty-two million, four hundred two thousand, twenty".