120211131220 has 48 divisors (see below), whose sum is σ = 255851292816. Its totient is φ = 47438720000.

The previous prime is 120211131197. The next prime is 120211131233. The reversal of 120211131220 is 22131112021.

It can be written as a sum of positive squares in 8 ways, for example, as 6418252996 + 113792878224 = 80114^2 + 337332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120211131194 and 120211131203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461730 + ... + 673510.

It is an arithmetic number, because the mean of its divisors is an integer number (5330235267).

Almost surely, 2^120211131220 is an apocalyptic number.

120211131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120211131220 is an abundant number, since it is smaller than the sum of its proper divisors (135640161596).

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

120211131220 is a wasteful number, since it uses less digits than its factorization.

120211131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212172 (or 212170 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120211131220 its reverse (22131112021), we get a palindrome (142342243241).

The spelling of 120211131220 in words is "one hundred twenty billion, two hundred eleven million, one hundred thirty-one thousand, two hundred twenty".