120212021221020 has 60 divisors (see below), whose sum is σ = 377109562872504. Its totient is φ = 32056538991840.

The previous prime is 120212021221013. The next prime is 120212021221043. The reversal of 120212021221020 is 20122120212021.

It is a happy number.

120212021221020 is a `hidden beast` number, since 1 + 202 + 1 + 20 + 212 + 210 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120212021220984 and 120212021221002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37102474066 + ... + 37102477305.

Almost surely, 2^{120212021221020} is an apocalyptic number.

120212021221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120212021221020 is an abundant number, since it is smaller than the sum of its proper divisors (256897541651484).

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

120212021221020 is a wasteful number, since it uses less digits than its factorization.

120212021221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74204951392 (or 74204951381 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 120212021221020 its reverse (20122120212021), we get a palindrome (140334141433041).

The spelling of 120212021221020 in words is "one hundred twenty trillion, two hundred twelve billion, twenty-one million, two hundred twenty-one thousand, twenty".