21022100000212 has 24 divisors (see below), whose sum is σ = 37029406208256. Its totient is φ = 10442292832608.

The previous prime is 21022100000173. The next prime is 21022100000233. The reversal of 21022100000212 is 21200000122012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21022100000192 and 21022100000201.

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, 737493 + ... + 6525955.

It is an arithmetic number, because the mean of its divisors is an integer number (1542891925344).

Almost surely, 2^{21022100000212} is an apocalyptic number.

It is an amenable number.

21022100000212 is a deficient number, since it is larger than the sum of its proper divisors (16007306208044).

21022100000212 is a wasteful number, since it uses less digits than its factorization.

21022100000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5794407 (or 5794405 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21022100000212 its reverse (21200000122012), we get a palindrome (42222100122224).

The spelling of 21022100000212 in words is "twenty-one trillion, twenty-two billion, one hundred million, two hundred twelve", and thus it is an aban number.