21100312020302 has 4 divisors (see below), whose sum is σ = 31650468030456. Its totient is φ = 10550156010150.

The previous prime is 21100312020289. The next prime is 21100312020341. The reversal of 21100312020302 is 20302021300112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275078005074 + ... + 5275078005077.

It is an arithmetic number, because the mean of its divisors is an integer number (7912617007614).

Almost surely, 2^{21100312020302} is an apocalyptic number.

21100312020302 is a deficient number, since it is larger than the sum of its proper divisors (10550156010154).

21100312020302 is a wasteful number, since it uses less digits than its factorization.

21100312020302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10550156010153.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21100312020302 its reverse (20302021300112), we get a palindrome (41402333320414).

The spelling of 21100312020302 in words is "twenty-one trillion, one hundred billion, three hundred twelve million, twenty thousand, three hundred two".