1023201220120 has 32 divisors (see below), whose sum is σ = 2358354035520. Its totient is φ = 399298036480.

The previous prime is 1023201220091. The next prime is 1023201220157. The reversal of 1023201220120 is 210221023201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1023201220094 and 1023201220103.

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, 311949952 + ... + 311953231.

It is an arithmetic number, because the mean of its divisors is an integer number (73698563610).

Almost surely, 2^{1023201220120} is an apocalyptic number.

1023201220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023201220120 is an abundant number, since it is smaller than the sum of its proper divisors (1335152815400).

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

1023201220120 is a wasteful number, since it uses less digits than its factorization.

1023201220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623903235 (or 623903231 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1023201220120 its reverse (210221023201), we get a palindrome (1233422243321).

The spelling of 1023201220120 in words is "one trillion, twenty-three billion, two hundred one million, two hundred twenty thousand, one hundred twenty".