120021120102 has 64 divisors (see below), whose sum is σ = 273117680640. Its totient is φ = 34856697600.

The previous prime is 120021120073. The next prime is 120021120103. The reversal of 120021120102 is 201021120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021120103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252202 + ... + 551042.

It is an arithmetic number, because the mean of its divisors is an integer number (4267463760).

Almost surely, 2^120021120102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120021120102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136558840320).

120021120102 is an abundant number, since it is smaller than the sum of its proper divisors (153096560538).

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

120021120102 is a wasteful number, since it uses less digits than its factorization.

120021120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299149.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120021120102 its reverse (201021120021), we get a palindrome (321042240123).

The spelling of 120021120102 in words is "one hundred twenty billion, twenty-one million, one hundred twenty thousand, one hundred two".