1212101102120 has 16 divisors (see below), whose sum is σ = 2727227479860. Its totient is φ = 484840440832.

The previous prime is 1212101102119. The next prime is 1212101102189. The reversal of 1212101102120 is 212011012121.

It can be written as a sum of positive squares in 2 ways, for example, as 1044733382884 + 167367719236 = 1022122^2 + 409106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212101102095 and 1212101102104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15151263737 + ... + 15151263816.

Almost surely, 2^{1212101102120} is an apocalyptic number.

1212101102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212101102120 is an abundant number, since it is smaller than the sum of its proper divisors (1515126377740).

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

1212101102120 is a wasteful number, since it uses less digits than its factorization.

1212101102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302527564 (or 30302527560 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1212101102120 its reverse (212011012121), we get a palindrome (1424112114241).

The spelling of 1212101102120 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred two thousand, one hundred twenty".