120213210021 has 32 divisors (see below), whose sum is σ = 168177009792. Its totient is φ = 76313180160.

The previous prime is 120213210011. The next prime is 120213210023. The reversal of 120213210021 is 120012312021.

It is not a de Polignac number, because 120213210021 - 2¹¹ = 120213207973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120213210023) 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 31 ways as a sum of consecutive naturals, for example, 821601 + ... + 956793.

It is an arithmetic number, because the mean of its divisors is an integer number (5255531556).

Almost surely, 2^120213210021 is an apocalyptic number.

It is an amenable number.

120213210021 is a deficient number, since it is larger than the sum of its proper divisors (47963799771).

120213210021 is a wasteful number, since it uses less digits than its factorization.

120213210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135413.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 120213210021 its reverse (120012312021), we get a palindrome (240225522042).

The spelling of 120213210021 in words is "one hundred twenty billion, two hundred thirteen million, two hundred ten thousand, twenty-one".