122121020 has 48 divisors (see below), whose sum is σ = 293905920. Its totient is φ = 41753664.

The previous prime is 122121017. The next prime is 122121061. The reversal of 122121020 is 20121221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122120992 and 122121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60467 + ... + 62453.

It is an arithmetic number, because the mean of its divisors is an integer number (6123040).

Almost surely, 2^122121020 is an apocalyptic number.

122121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121020 is an abundant number, since it is smaller than the sum of its proper divisors (171784900).

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

122121020 is a wasteful number, since it uses less digits than its factorization.

122121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2440 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 122121020 is about 11050.8379772758. The cubic root of 122121020 is about 496.1315067099.

Adding to 122121020 its reverse (20121221), we get a palindrome (142242241).

The spelling of 122121020 in words is "one hundred twenty-two million, one hundred twenty-one thousand, twenty".