221211001212010 has 16 divisors (see below), whose sum is σ = 398244410405856. Its totient is φ = 88470043101648.

The previous prime is 221211001211939. The next prime is 221211001212029. The reversal of 221211001212010 is 10212100112122.

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, 1794608184 + ... + 1794731443.

It is an arithmetic number, because the mean of its divisors is an integer number (24890275650366).

Almost surely, 2^{221211001212010} is an apocalyptic number.

221211001212010 is a deficient number, since it is larger than the sum of its proper divisors (177033409193846).

221211001212010 is a wasteful number, since it uses less digits than its factorization.

221211001212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589345797.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221211001212010 its reverse (10212100112122), we get a palindrome (231423101324132).

The spelling of 221211001212010 in words is "two hundred twenty-one trillion, two hundred eleven billion, one million, two hundred twelve thousand, ten".