1020221210203 has 4 divisors (see below), whose sum is σ = 1098699764848. Its totient is φ = 941742655560.

The previous prime is 1020221210167. The next prime is 1020221210207. The reversal of 1020221210203 is 3020121220201.

It is a happy number.

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 1020221210203 - 2⁹ = 1020221209691 is a prime.

It is a super-3 number, since 3×1020221210203³ (a number of 37 digits) contains 333 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 (1020221210207) 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, 39239277303 + ... + 39239277328.

It is an arithmetic number, because the mean of its divisors is an integer number (274674941212).

Almost surely, 2^{1020221210203} is an apocalyptic number.

1020221210203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1020221210203 is a deficient number, since it is larger than the sum of its proper divisors (78478554645).

1020221210203 is an equidigital number, since it uses as much as digits as its factorization.

1020221210203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78478554644.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1020221210203 its reverse (3020121220201), we get a palindrome (4040342430404).

The spelling of 1020221210203 in words is "one trillion, twenty billion, two hundred twenty-one million, two hundred ten thousand, two hundred three".