120021102002 has 4 divisors (see below), whose sum is σ = 180031653006. Its totient is φ = 60010551000.

The previous prime is 120021102001. The next prime is 120021102031. The reversal of 120021102002 is 200201120021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89891432761 + 30129669241 = 299819^2 + 173579^2 .

It is not an unprimeable number, because it can be changed into a prime (120021102001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30005275499 + ... + 30005275502.

Almost surely, 2^120021102002 is an apocalyptic number.

120021102002 is a deficient number, since it is larger than the sum of its proper divisors (60010551004).

120021102002 is an equidigital number, since it uses as much as digits as its factorization.

120021102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60010551003.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120021102002 its reverse (200201120021), we get a palindrome (320222222023).

The spelling of 120021102002 in words is "one hundred twenty billion, twenty-one million, one hundred two thousand, two".