10220211101221 has 4 divisors (see below), whose sum is σ = 11149321201344. Its totient is φ = 9291101001100.

The previous prime is 10220211101159. The next prime is 10220211101239. The reversal of 10220211101221 is 12210111202201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10220211101221 - 2¹¹ = 10220211099173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220211101195 and 10220211101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220217101221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464555050045 + ... + 464555050066.

It is an arithmetic number, because the mean of its divisors is an integer number (2787330300336).

Almost surely, 2^{10220211101221} is an apocalyptic number.

10220211101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10220211101221 is a deficient number, since it is larger than the sum of its proper divisors (929110100123).

10220211101221 is an equidigital number, since it uses as much as digits as its factorization.

10220211101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929110100122.

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

Adding to 10220211101221 its reverse (12210111202201), we get a palindrome (22430322303422).

The spelling of 10220211101221 in words is "ten trillion, two hundred twenty billion, two hundred eleven million, one hundred one thousand, two hundred twenty-one".