120021211012 has 18 divisors (see below), whose sum is σ = 223119018122. Its totient is φ = 56480569344.

The previous prime is 120021211001. The next prime is 120021211049. The reversal of 120021211012 is 210112120021.

It can be written as a sum of positive squares in 3 ways, for example, as 80902700356 + 39118510656 = 284434^2 + 197784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120021210983 and 120021211001.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51911133 + ... + 51913444.

Almost surely, 2^120021211012 is an apocalyptic number.

It is an amenable number.

120021211012 is a deficient number, since it is larger than the sum of its proper divisors (103097807110).

120021211012 is a wasteful number, since it uses less digits than its factorization.

120021211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103824615 (or 103824596 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120021211012 its reverse (210112120021), we get a palindrome (330133331033).

Subtracting 120021211012 from its reverse (210112120021), we obtain a palindrome (90090909009).

The spelling of 120021211012 in words is "one hundred twenty billion, twenty-one million, two hundred eleven thousand, twelve".