1210220212120 has 32 divisors (see below), whose sum is σ = 2723030064720. Its totient is φ = 484081936000.

The previous prime is 1210220212067. The next prime is 1210220212127. The reversal of 1210220212120 is 212120220121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1210220212094 and 1210220212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210220212127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4283139 + ... + 4556941.

Almost surely, 2^{1210220212120} is an apocalyptic number.

1210220212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210220212120 is an abundant number, since it is smaller than the sum of its proper divisors (1512809852600).

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

1210220212120 is a wasteful number, since it uses less digits than its factorization.

1210220212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384315 (or 384311 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1210220212120 its reverse (212120220121), we get a palindrome (1422340432241).

The spelling of 1210220212120 in words is "one trillion, two hundred ten billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty".