1210120221212 has 48 divisors (see below), whose sum is σ = 2467011520512. Its totient is φ = 508609358400.

The previous prime is 1210120221179. The next prime is 1210120221241. The reversal of 1210120221212 is 2121220210121.

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, 3146837 + ... + 3510387.

It is an arithmetic number, because the mean of its divisors is an integer number (51396073344).

Almost surely, 2^{1210120221212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210120221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233505760256).

1210120221212 is an abundant number, since it is smaller than the sum of its proper divisors (1256891299300).

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

1210120221212 is a wasteful number, since it uses less digits than its factorization.

1210120221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365858 (or 365856 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1210120221212 its reverse (2121220210121), we get a palindrome (3331340431333).

The spelling of 1210120221212 in words is "one trillion, two hundred ten billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twelve".