21210101022212 has 24 divisors (see below), whose sum is σ = 37356879682752. Its totient is φ = 10536925528800.

The previous prime is 21210101022167. The next prime is 21210101022223. The reversal of 21210101022212 is 21222010101212.

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, 26949464 + ... + 27725327.

It is an arithmetic number, because the mean of its divisors is an integer number (1556536653448).

Almost surely, 2^{21210101022212} is an apocalyptic number.

It is an amenable number.

21210101022212 is a deficient number, since it is larger than the sum of its proper divisors (16146778660540).

21210101022212 is a wasteful number, since it uses less digits than its factorization.

21210101022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54675419 (or 54675417 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21210101022212 its reverse (21222010101212), we get a palindrome (42432111123424).

The spelling of 21210101022212 in words is "twenty-one trillion, two hundred ten billion, one hundred one million, twenty-two thousand, two hundred twelve".