21010211102212 has 24 divisors (see below), whose sum is σ = 36944605081440. Its totient is φ = 10454725869120.

The previous prime is 21010211102159. The next prime is 21010211102249. The reversal of 21010211102212 is 21220111201012.

It is a super-2 number, since 2×21010211102212² (a number of 27 digits) contains 22 as substring.

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, 13803762 + ... + 15250057.

It is an arithmetic number, because the mean of its divisors is an integer number (1539358545060).

Almost surely, 2^{21010211102212} is an apocalyptic number.

It is an amenable number.

21010211102212 is a deficient number, since it is larger than the sum of its proper divisors (15934393979228).

21010211102212 is a wasteful number, since it uses less digits than its factorization.

21010211102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29054691 (or 29054689 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21010211102212 its reverse (21220111201012), we get a palindrome (42230322303224).

The spelling of 21010211102212 in words is "twenty-one trillion, ten billion, two hundred eleven million, one hundred two thousand, two hundred twelve".