1221102200211 has 8 divisors (see below), whose sum is σ = 1643073297360. Its totient is φ = 806599618272.

The previous prime is 1221102200189. The next prime is 1221102200221. The reversal of 1221102200211 is 1120022011221.

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

It is not a de Polignac number, because 1221102200211 - 2⁷ = 1221102200083 is a prime.

It is a super-3 number, since 3×1221102200211³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221102200221) 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, 1867128420 + ... + 1867129073.

It is an arithmetic number, because the mean of its divisors is an integer number (205384162170).

Almost surely, 2^{1221102200211} is an apocalyptic number.

1221102200211 is a deficient number, since it is larger than the sum of its proper divisors (421971097149).

1221102200211 is a wasteful number, since it uses less digits than its factorization.

1221102200211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734257605.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1221102200211 its reverse (1120022011221), we get a palindrome (2341124211432).

The spelling of 1221102200211 in words is "one trillion, two hundred twenty-one billion, one hundred two million, two hundred thousand, two hundred eleven".