1210212012120 has 128 divisors (see below), whose sum is σ = 3731841892800. Its totient is φ = 313741541376.

The previous prime is 1210212012077. The next prime is 1210212012127. The reversal of 1210212012120 is 212102120121.

It is a super-2 number, since 2×1210212012120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1210212012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210212012127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5291496 + ... + 5515464.

Almost surely, 2^{1210212012120} is an apocalyptic number.

1210212012120 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 1210212012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865920946400).

1210212012120 is an abundant number, since it is smaller than the sum of its proper divisors (2521629880680).

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

1210212012120 is a wasteful number, since it uses less digits than its factorization.

1210212012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225237 (or 225233 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1210212012120 its reverse (212102120121), we get a palindrome (1422314132241).

The spelling of 1210212012120 in words is "one trillion, two hundred ten billion, two hundred twelve million, twelve thousand, one hundred twenty".