102021211111203 has 16 divisors (see below), whose sum is σ = 151168562856960. Its totient is φ = 68002428196008.

The previous prime is 102021211111151. The next prime is 102021211111213. The reversal of 102021211111203 is 302111112120201.

It is a happy number.

It is not a de Polignac number, because 102021211111203 - 2⁶ = 102021211111139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102021211111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325188775 + ... + 325502352.

It is an arithmetic number, because the mean of its divisors is an integer number (9448035178560).

Almost surely, 2^{102021211111203} is an apocalyptic number.

102021211111203 is a deficient number, since it is larger than the sum of its proper divisors (49147351745757).

102021211111203 is an equidigital number, since it uses as much as digits as its factorization.

102021211111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650696943 (or 650696937 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 102021211111203 its reverse (302111112120201), we get a palindrome (404132323231404).

The spelling of 102021211111203 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, two hundred three".