21110100001213 has 8 divisors (see below), whose sum is σ = 21255291860096. Its totient is φ = 20964979062000.

The previous prime is 21110100001129. The next prime is 21110100001241. The reversal of 21110100001213 is 31210000101112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21110100001213 - 2²⁹ = 21109563130301 is a prime.

It is a super-2 number, since 2×21110100001213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110100001193 and 21110100001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110100001813) 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, 17132478 + ... + 18323263.

It is an arithmetic number, because the mean of its divisors is an integer number (2656911482512).

Almost surely, 2^{21110100001213} is an apocalyptic number.

It is an amenable number.

21110100001213 is a deficient number, since it is larger than the sum of its proper divisors (145191858883).

21110100001213 is a wasteful number, since it uses less digits than its factorization.

21110100001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35459835.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21110100001213 its reverse (31210000101112), we get a palindrome (52320100102325).

The spelling of 21110100001213 in words is "twenty-one trillion, one hundred ten billion, one hundred million, one thousand, two hundred thirteen".