122121020200120 has 32 divisors (see below), whose sum is σ = 274878837867600. Its totient is φ = 48829467205888.

The previous prime is 122121020200111. The next prime is 122121020200147. The reversal of 122121020200120 is 21002020121221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122121020200094 and 122121020200103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591797869 + ... + 592004188.

Almost surely, 2^{122121020200120} is an apocalyptic number.

122121020200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121020200120 is an abundant number, since it is smaller than the sum of its proper divisors (152757817667480).

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

122121020200120 is a wasteful number, since it uses less digits than its factorization.

122121020200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183804647 (or 1183804643 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122121020200120 its reverse (21002020121221), we get a palindrome (143123040321341).

The spelling of 122121020200120 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, twenty million, two hundred thousand, one hundred twenty".