10203012212221 has 4 divisors (see below), whose sum is σ = 10204864952832. Its totient is φ = 10201159471612.

The previous prime is 10203012212209. The next prime is 10203012212233. The reversal of 10203012212221 is 12221221030201.

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 an interprime number because it is at equal distance from previous prime (10203012212209) and next prime (10203012212233).

It is a cyclic number.

It is not a de Polignac number, because 10203012212221 - 2⁵ = 10203012212189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203012212021) 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, 926362045 + ... + 926373058.

It is an arithmetic number, because the mean of its divisors is an integer number (2551216238208).

Almost surely, 2^{10203012212221} is an apocalyptic number.

It is an amenable number.

10203012212221 is a deficient number, since it is larger than the sum of its proper divisors (1852740611).

10203012212221 is an equidigital number, since it uses as much as digits as its factorization.

10203012212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852740610.

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

Adding to 10203012212221 its reverse (12221221030201), we get a palindrome (22424233242422).

The spelling of 10203012212221 in words is "ten trillion, two hundred three billion, twelve million, two hundred twelve thousand, two hundred twenty-one".