2211020101221 has 8 divisors (see below), whose sum is σ = 3027703201824. Its totient is φ = 1434175200720.

The previous prime is 2211020101211. The next prime is 2211020101229. The reversal of 2211020101221 is 1221010201122.

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

It is not a de Polignac number, because 2211020101221 - 2⁷ = 2211020101093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211020101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211020101229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9959549895 + ... + 9959550116.

It is an arithmetic number, because the mean of its divisors is an integer number (378462900228).

Almost surely, 2^{2211020101221} is an apocalyptic number.

It is an amenable number.

2211020101221 is a deficient number, since it is larger than the sum of its proper divisors (816683100603).

2211020101221 is a wasteful number, since it uses less digits than its factorization.

2211020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19919100051.

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

Adding to 2211020101221 its reverse (1221010201122), we get a palindrome (3432030302343).

Subtracting from 2211020101221 its reverse (1221010201122), we obtain a palindrome (990009900099).

The spelling of 2211020101221 in words is "two trillion, two hundred eleven billion, twenty million, one hundred one thousand, two hundred twenty-one".