10221211220203 has 4 divisors (see below), whose sum is σ = 10221274285168. Its totient is φ = 10221148155240.

The previous prime is 10221211220197. The next prime is 10221211220219. The reversal of 10221211220203 is 30202211212201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10221211220203 - 2⁹ = 10221211219691 is a prime.

It is a super-4 number, since 4×10221211220203⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221211220243) 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, 31288743 + ... + 31613728.

It is an arithmetic number, because the mean of its divisors is an integer number (2555318571292).

Almost surely, 2^{10221211220203} is an apocalyptic number.

10221211220203 is a deficient number, since it is larger than the sum of its proper divisors (63064965).

10221211220203 is an equidigital number, since it uses as much as digits as its factorization.

10221211220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63064964.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10221211220203 its reverse (30202211212201), we get a palindrome (40423422432404).

The spelling of 10221211220203 in words is "ten trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, two hundred three".