21000102202011 has 8 divisors (see below), whose sum is σ = 28025895368704. Its totient is φ = 13987188585000.

The previous prime is 21000102201997. The next prime is 21000102202019. The reversal of 21000102202011 is 11020220100012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000102202011 - 2¹¹ = 21000102199963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000102202019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219883615 + ... + 3219890136.

It is an arithmetic number, because the mean of its divisors is an integer number (3503236921088).

Almost surely, 2^{21000102202011} is an apocalyptic number.

21000102202011 is a deficient number, since it is larger than the sum of its proper divisors (7025793166693).

21000102202011 is a wasteful number, since it uses less digits than its factorization.

21000102202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6439774841.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21000102202011 its reverse (11020220100012), we get a palindrome (32020322302023).

The spelling of 21000102202011 in words is "twenty-one trillion, one hundred two million, two hundred two thousand, eleven".