221212022211010 has 16 divisors (see below), whose sum is σ = 398561222115000. Its totient is φ = 88400457298816.

The previous prime is 221212022211001. The next prime is 221212022211023. The reversal of 221212022211010 is 10112220212122.

It can be written as a sum of positive squares in 4 ways, for example, as 165943785594889 + 55268236616121 = 12881917^2 + 7434261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10543937185 + ... + 10543958164.

Almost surely, 2^{221212022211010} is an apocalyptic number.

221212022211010 is a deficient number, since it is larger than the sum of its proper divisors (177349199903990).

221212022211010 is a wasteful number, since it uses less digits than its factorization.

221212022211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21087896405.

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

Adding to 221212022211010 its reverse (10112220212122), we get a palindrome (231324242423132).

The spelling of 221212022211010 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty-two million, two hundred eleven thousand, ten".