222121220110210 has 32 divisors (see below), whose sum is σ = 423679142732400. Its totient is φ = 83554505582592.

The previous prime is 222121220110201. The next prime is 222121220110249. The reversal of 222121220110210 is 12011022121222.

It can be written as a sum of positive squares in 8 ways, for example, as 214582038607161 + 7539181503049 = 14648619^2 + 2745757^2 .

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, 527920435 + ... + 528341014.

Almost surely, 2^{222121220110210} is an apocalyptic number.

222121220110210 is a deficient number, since it is larger than the sum of its proper divisors (201557922622190).

222121220110210 is a wasteful number, since it uses less digits than its factorization.

222121220110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056262710.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222121220110210 its reverse (12011022121222), we get a palindrome (234132242231432).

The spelling of 222121220110210 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred ten thousand, two hundred ten".