2221201021210 has 16 divisors (see below), whose sum is σ = 4013718892776. Its totient is φ = 885023285248.

The previous prime is 2221201021199. The next prime is 2221201021213. The reversal of 2221201021210 is 121201021222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2170586370681 + 50614650529 = 1473291^2 + 224977^2 .

It is not an unprimeable number, because it can be changed into a prime (2221201021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432137707 + ... + 432142846.

Almost surely, 2^{2221201021210} is an apocalyptic number.

2221201021210 is a deficient number, since it is larger than the sum of its proper divisors (1792517871566).

2221201021210 is a wasteful number, since it uses less digits than its factorization.

2221201021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864280817.

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

Adding to 2221201021210 its reverse (121201021222), we get a palindrome (2342402042432).

The spelling of 2221201021210 in words is "two trillion, two hundred twenty-one billion, two hundred one million, twenty-one thousand, two hundred ten".