1012221023203 has 4 divisors (see below), whose sum is σ = 1090084178848. Its totient is φ = 934357867560.

The previous prime is 1012221023197. The next prime is 1012221023249. The reversal of 1012221023203 is 3023201222101.

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

It is a de Polignac number, because none of the positive numbers 2^k-1012221023203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012221027203) 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, 38931577803 + ... + 38931577828.

It is an arithmetic number, because the mean of its divisors is an integer number (272521044712).

Almost surely, 2^{1012221023203} is an apocalyptic number.

1012221023203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1012221023203 is a deficient number, since it is larger than the sum of its proper divisors (77863155645).

1012221023203 is an equidigital number, since it uses as much as digits as its factorization.

1012221023203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77863155644.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1012221023203 its reverse (3023201222101), we get a palindrome (4035422245304).

The spelling of 1012221023203 in words is "one trillion, twelve billion, two hundred twenty-one million, twenty-three thousand, two hundred three".