21211120000012 has 6 divisors (see below), whose sum is σ = 37119460000028. Its totient is φ = 10605560000004.

The previous prime is 21211119999997. The next prime is 21211120000019. The reversal of 21211120000012 is 21000002111212.

It is a super-2 number, since 2×21211120000012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21211119999947 and 21211120000001.

It is not an unprimeable number, because it can be changed into a prime (21211120000019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2651389999998 + ... + 2651390000005.

Almost surely, 2^{21211120000012} is an apocalyptic number.

It is an amenable number.

21211120000012 is a deficient number, since it is larger than the sum of its proper divisors (15908340000016).

21211120000012 is a wasteful number, since it uses less digits than its factorization.

21211120000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302780000007 (or 5302780000005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21211120000012 its reverse (21000002111212), we get a palindrome (42211122111224).

The spelling of 21211120000012 in words is "twenty-one trillion, two hundred eleven billion, one hundred twenty million, twelve", and thus it is an aban number.