1210222011220 has 48 divisors (see below), whose sum is σ = 2548820026368. Its totient is φ = 482688529920.

The previous prime is 1210222011211. The next prime is 1210222011247. The reversal of 1210222011220 is 221102220121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1210222011194 and 1210222011203.

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, 63283260 + ... + 63302380.

It is an arithmetic number, because the mean of its divisors is an integer number (53100417216).

Almost surely, 2^{1210222011220} is an apocalyptic number.

1210222011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210222011220 is an abundant number, since it is smaller than the sum of its proper divisors (1338598015148).

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

1210222011220 is a wasteful number, since it uses less digits than its factorization.

1210222011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28120 (or 28118 counting only the distinct ones).

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

Adding to 1210222011220 its reverse (221102220121), we get a palindrome (1431324231341).

The spelling of 1210222011220 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, eleven thousand, two hundred twenty".