821101000212 has 96 divisors (see below), whose sum is σ = 2254304183040. Its totient is φ = 257565864960.

The previous prime is 821101000207. The next prime is 821101000219. The reversal of 821101000212 is 212000101128.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821101000219) 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, 16059673 + ... + 16110719.

It is an arithmetic number, because the mean of its divisors is an integer number (23482335240).

Almost surely, 2^821101000212 is an apocalyptic number.

It is an amenable number.

821101000212 is an abundant number, since it is smaller than the sum of its proper divisors (1433203182828).

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

821101000212 is a wasteful number, since it uses less digits than its factorization.

821101000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59838 (or 59830 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The spelling of 821101000212 in words is "eight hundred twenty-one billion, one hundred one million, two hundred twelve", and thus it is an aban number.