120021202131220 has 384 divisors, whose sum is σ = 289360648765440. Its totient is φ = 41482633420800.

The previous prime is 120021202131199. The next prime is 120021202131223. The reversal of 120021202131220 is 22131202120021.

It is a super-2 number, since 2×120021202131220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021202131223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37308423052 + ... + 37308426268.

It is an arithmetic number, because the mean of its divisors is an integer number (753543356160).

Almost surely, 2^{120021202131220} is an apocalyptic number.

120021202131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120021202131220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144680324382720).

120021202131220 is an abundant number, since it is smaller than the sum of its proper divisors (169339446634220).

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

120021202131220 is a wasteful number, since it uses less digits than its factorization.

120021202131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015 (or 4013 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 120021202131220 its reverse (22131202120021), we get a palindrome (142152404251241).

The spelling of 120021202131220 in words is "one hundred twenty trillion, twenty-one billion, two hundred two million, one hundred thirty-one thousand, two hundred twenty".