120202021020 has 96 divisors (see below), whose sum is σ = 340487110656. Its totient is φ = 31681504000.

The previous prime is 120202021013. The next prime is 120202021031. The reversal of 120202021020 is 20120202021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 120202020987 and 120202021005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3540325 + ... + 3574115.

It is an arithmetic number, because the mean of its divisors is an integer number (3546740736).

Almost surely, 2^120202021020 is an apocalyptic number.

120202021020 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 120202021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170243555328).

120202021020 is an abundant number, since it is smaller than the sum of its proper divisors (220285089636).

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

120202021020 is a wasteful number, since it uses less digits than its factorization.

120202021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34491 (or 34489 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 120202021020 its reverse (20120202021), we get a palindrome (140322223041).

The spelling of 120202021020 in words is "one hundred twenty billion, two hundred two million, twenty-one thousand, twenty".