120001021210 has 32 divisors (see below), whose sum is σ = 249404198400. Its totient is φ = 40719048192.

The previous prime is 120001021187. The next prime is 120001021211. The reversal of 120001021210 is 12120100021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (120001021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8829810 + ... + 8843389.

It is an arithmetic number, because the mean of its divisors is an integer number (7793881200).

Almost surely, 2^120001021210 is an apocalyptic number.

120001021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120001021210 is an abundant number, since it is smaller than the sum of its proper divisors (129403177190).

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

120001021210 is a wasteful number, since it uses less digits than its factorization.

120001021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17673310.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120001021210 its reverse (12120100021), we get a palindrome (132121121231).

The spelling of 120001021210 in words is "one hundred twenty billion, one million, twenty-one thousand, two hundred ten".