221212010212010 has 32 divisors (see below), whose sum is σ = 399944651766912. Its totient is φ = 88093036296000.

The previous prime is 221212010211943. The next prime is 221212010212021. The reversal of 221212010212010 is 10212010212122.

It is a self number, because there is not a number n which added to its sum of digits gives 221212010212010.

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, 102789764 + ... + 104919776.

It is an arithmetic number, because the mean of its divisors is an integer number (12498270367716).

Almost surely, 2^{221212010212010} is an apocalyptic number.

221212010212010 is a deficient number, since it is larger than the sum of its proper divisors (178732641554902).

221212010212010 is a wasteful number, since it uses less digits than its factorization.

221212010212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175998.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221212010212010 its reverse (10212010212122), we get a palindrome (231424020424132).

The spelling of 221212010212010 in words is "two hundred twenty-one trillion, two hundred twelve billion, ten million, two hundred twelve thousand, ten".