10002212111221 has 8 divisors (see below), whose sum is σ = 11143663784064. Its totient is φ = 8899453715520.

The previous prime is 10002212111209. The next prime is 10002212111261. The reversal of 10002212111221 is 12211121220001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10002212111221 - 2⁷ = 10002212111093 is a prime.

It is a super-2 number, since 2×10002212111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002212111195 and 10002212111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002212111261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9673318740 + ... + 9673319773.

It is an arithmetic number, because the mean of its divisors is an integer number (1392957973008).

Almost surely, 2^{10002212111221} is an apocalyptic number.

10002212111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10002212111221 is a deficient number, since it is larger than the sum of its proper divisors (1141451672843).

10002212111221 is a wasteful number, since it uses less digits than its factorization.

10002212111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19346638571.

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

Adding to 10002212111221 its reverse (12211121220001), we get a palindrome (22213333331222).

The spelling of 10002212111221 in words is "ten trillion, two billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-one".