21010011200102 has 4 divisors (see below), whose sum is σ = 31515016800156. Its totient is φ = 10505005600050.

The previous prime is 21010011200081. The next prime is 21010011200111. The reversal of 21010011200102 is 20100211001012.

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

It is a super-2 number, since 2×21010011200102² (a number of 27 digits) contains 22 as substring.

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, 5252502800024 + ... + 5252502800027.

It is an arithmetic number, because the mean of its divisors is an integer number (7878754200039).

Almost surely, 2^{21010011200102} is an apocalyptic number.

21010011200102 is a deficient number, since it is larger than the sum of its proper divisors (10505005600054).

21010011200102 is a wasteful number, since it uses less digits than its factorization.

21010011200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10505005600053.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21010011200102 its reverse (20100211001012), we get a palindrome (41110222201114).

The spelling of 21010011200102 in words is "twenty-one trillion, ten billion, eleven million, two hundred thousand, one hundred two".