1210221220132 has 24 divisors (see below), whose sum is σ = 2172329523000. Its totient is φ = 589708893696.

The previous prime is 1210221220099. The next prime is 1210221220133. The reversal of 1210221220132 is 2310221220121.

It can be written as a sum of positive squares in 4 ways, for example, as 335966299876 + 874254920256 = 579626^2 + 935016^2 .

It is not an unprimeable number, because it can be changed into a prime (1210221220133) 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, 19124757 + ... + 19187932.

It is an arithmetic number, because the mean of its divisors is an integer number (90513730125).

Almost surely, 2^{1210221220132} is an apocalyptic number.

It is an amenable number.

1210221220132 is a deficient number, since it is larger than the sum of its proper divisors (962108302868).

1210221220132 is a wasteful number, since it uses less digits than its factorization.

1210221220132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38312895 (or 38312893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1210221220132 its reverse (2310221220121), we get a palindrome (3520442440253).

The spelling of 1210221220132 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, one hundred thirty-two".