120121210020020 has 48 divisors (see below), whose sum is σ = 275471350374528. Its totient is φ = 43635268844160.

The previous prime is 120121210019957. The next prime is 120121210020029. The reversal of 120121210020020 is 20020012121021.

It is a junction number, because it is equal to n+sod(n) for n = 120121210019977 and 120121210020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121210020029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282106547 + ... + 282532026.

It is an arithmetic number, because the mean of its divisors is an integer number (5738986466136).

Almost surely, 2^{120121210020020} is an apocalyptic number.

120121210020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121210020020 is an abundant number, since it is smaller than the sum of its proper divisors (155350140354508).

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

120121210020020 is a wasteful number, since it uses less digits than its factorization.

120121210020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564639560 (or 564639558 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120121210020020 its reverse (20020012121021), we get a palindrome (140141222141041).

The spelling of 120121210020020 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred ten million, twenty thousand, twenty".