21110201211012 has 96 divisors (see below), whose sum is σ = 51776043403392. Its totient is φ = 6685888075776.

The previous prime is 21110201210983. The next prime is 21110201211013. The reversal of 21110201211012 is 21011210201112.

It is a happy number.

It is a super-2 number, since 2×21110201211012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21110201210982 and 21110201211000.

It is not an unprimeable number, because it can be changed into a prime (21110201211013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90245628 + ... + 90479244.

It is an arithmetic number, because the mean of its divisors is an integer number (539333785452).

Almost surely, 2^{21110201211012} is an apocalyptic number.

It is an amenable number.

21110201211012 is an abundant number, since it is smaller than the sum of its proper divisors (30665842192380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110201211012 is a wasteful number, since it uses less digits than its factorization.

21110201211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238437 (or 238435 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21110201211012 its reverse (21011210201112), we get a palindrome (42121411412124).

The spelling of 21110201211012 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred eleven thousand, twelve".