1210212220220 has 12 divisors (see below), whose sum is σ = 2541445662504. Its totient is φ = 484084888080.

The previous prime is 1210212220169. The next prime is 1210212220229. The reversal of 1210212220220 is 220222120121.

It is a happy number.

It is a super-2 number, since 2×1210212220220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210212220229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30255305486 + ... + 30255305525.

It is an arithmetic number, because the mean of its divisors is an integer number (211787138542).

Almost surely, 2^{1210212220220} is an apocalyptic number.

1210212220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210212220220 is an abundant number, since it is smaller than the sum of its proper divisors (1331233442284).

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

1210212220220 is a wasteful number, since it uses less digits than its factorization.

1210212220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60510611020 (or 60510611018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1210212220220 its reverse (220222120121), we get a palindrome (1430434340341).

The spelling of 1210212220220 in words is "one trillion, two hundred ten billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty".