21010011120212 has 24 divisors (see below), whose sum is σ = 37578669811200. Its totient is φ = 10273591920800.

The previous prime is 21010011120193. The next prime is 21010011120223. The reversal of 21010011120212 is 21202111001012.

It is a super-2 number, since 2×21010011120212² (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 in 7 ways as a sum of consecutive naturals, for example, 42705212 + ... + 43194387.

It is an arithmetic number, because the mean of its divisors is an integer number (1565777908800).

Almost surely, 2^{21010011120212} is an apocalyptic number.

It is an amenable number.

21010011120212 is a deficient number, since it is larger than the sum of its proper divisors (16568658690988).

21010011120212 is a wasteful number, since it uses less digits than its factorization.

21010011120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85900951 (or 85900949 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21010011120212 its reverse (21202111001012), we get a palindrome (42212122121224).

The spelling of 21010011120212 in words is "twenty-one trillion, ten billion, eleven million, one hundred twenty thousand, two hundred twelve".